Pass PHPStan level 8 (#5946)

* Pass PHPStan level 8
And prepare for PHPStan level 9 https://phpstan.org/user-guide/rule-levels

* Revert wrong replace in comment

* Fix PHPStan level 8

* Update PHPStan and other dev dependencies

* Remove obsolete comment

* noVariableVariables and towards bleedingEdge
https://github.com/phpstan/phpstan-strict-rules
https://phpstan.org/blog/what-is-bleeding-edge

* More bleedingEdge

* A bit more PHPStan level 9

* More PHPStan level 9

* Prepare for booleansInConditions
Ignore int and null

* Revert wrong line

* More fixes

* Fix keep_max_n_unread

* Stricter attribute functions

* Stricter callHooks and more PHPStan level 9

* More typing

* A tiny more

6 files changed, 172 insertions, 169 deletions

diff --git a/app/views/configure/archiving.phtml b/app/views/configure/archiving.phtml
index 6004cec1b..86b8246e3 100644
--- a/app/views/configure/archiving.phtml
+++ b/app/views/configure/archiving.phtml
@@ -17,21 +17,21 @@
 		<div class="form-group">
 			<label class="group-name" for="ttl_default"><?= _t('conf.archiving.ttl') ?></label>
 			<div class="group-controls">
-				<select class="number" name="ttl_default" id="ttl_default" required="required" data-leave-validation="<?= FreshRSS_Context::$user_conf->ttl_default ?>"><?php
+				<select class="number" name="ttl_default" id="ttl_default" required="required" data-leave-validation="<?= FreshRSS_Context::userConf()->ttl_default ?>"><?php
 					$found = false;
 					foreach (array(1200 => '20min', 1500 => '25min', 1800 => '30min', 2700 => '45min',
 							3600 => '1h', 5400 => '1.5h', 7200 => '2h', 10800 => '3h', 14400 => '4h', 18800 => '5h', 21600 => '6h', 25200 => '7h', 28800 => '8h',
 							36000 => '10h', 43200 => '12h', 64800 => '18h',
 							86400 => '1d', 129600 => '1.5d', 172800 => '2d', 259200 => '3d', 345600 => '4d', 432000 => '5d', 518400 => '6d',
 							604800 => '1wk') as $v => $t) {
-						echo '<option value="' . $v . (FreshRSS_Context::$user_conf->ttl_default == $v ? '" selected="selected' : '') . '">' . $t . '</option>';
-						if (FreshRSS_Context::$user_conf->ttl_default == $v) {
+						echo '<option value="' . $v . (FreshRSS_Context::userConf()->ttl_default == $v ? '" selected="selected' : '') . '">' . $t . '</option>';
+						if (FreshRSS_Context::userConf()->ttl_default == $v) {
 							$found = true;
 						}
 					}
 					if (!$found) {
-						echo '<option value="' . intval(FreshRSS_Context::$user_conf->ttl_default) . '" selected="selected">'
-							. intval(FreshRSS_Context::$user_conf->ttl_default) . 's</option>';
+						echo '<option value="' . intval(FreshRSS_Context::userConf()->ttl_default) . '" selected="selected">'
+							. intval(FreshRSS_Context::userConf()->ttl_default) . 's</option>';
 					}
 				?></select> (<?= _t('gen.short.by_default') ?>)
 			</div>
@@ -46,10 +46,10 @@
 			<div class="group-controls">
 				<label class="checkbox" for="enable_keep_max">
 					<input type="checkbox" name="enable_keep_max" id="enable_keep_max" value="1"<?=
-						empty(FreshRSS_Context::$user_conf->archiving['keep_max']) ? '' : ' checked="checked"' ?>
-						data-leave-validation="<?= empty(FreshRSS_Context::$user_conf->archiving['keep_max']) ? 0 : 1 ?>"/>
+						empty(FreshRSS_Context::userConf()->archiving['keep_max']) ? '' : ' checked="checked"' ?>
+						data-leave-validation="<?= empty(FreshRSS_Context::userConf()->archiving['keep_max']) ? 0 : 1 ?>"/>
 					<?= _t('conf.archiving.keep_max') ?>
-					<?php $keepMax = empty(FreshRSS_Context::$user_conf->archiving['keep_max']) ? 200 : FreshRSS_Context::$user_conf->archiving['keep_max']; ?>
+					<?php $keepMax = empty(FreshRSS_Context::userConf()->archiving['keep_max']) ? 200 : FreshRSS_Context::userConf()->archiving['keep_max']; ?>
 					<input type="number" id="keep_max" name="keep_max" min="0" value="<?= $keepMax ?>" data-leave-validation="<?= $keepMax ?>"/>
 				</label>
 			</div>
@@ -59,18 +59,18 @@
 			<div class="group-controls">
 				<label class="checkbox" for="enable_keep_period">
 					<input type="checkbox" name="enable_keep_period" id="enable_keep_period" value="1"<?=
-						FreshRSS_Context::$user_conf->volatile['enable_keep_period'] ? ' checked="checked"' : '' ?>
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->volatile['enable_keep_period'] ? 1 : 0 ?>"/>
+						FreshRSS_Context::userConf()->volatile['enable_keep_period'] ? ' checked="checked"' : '' ?>
+						data-leave-validation="<?= FreshRSS_Context::userConf()->volatile['enable_keep_period'] ? 1 : 0 ?>"/>
 					<?= _t('conf.archiving.keep_period') ?>
-					<input type="number" id="keep_period_count" name="keep_period_count" min="0" value="<?= FreshRSS_Context::$user_conf->volatile['keep_period_count'] ?>"
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->volatile['keep_period_count'] ?>"/>
-					<select class="number" name="keep_period_unit" id="keep_period_unit" data-leave-validation="<?= FreshRSS_Context::$user_conf->volatile['keep_period_unit'] ?>">
+					<input type="number" id="keep_period_count" name="keep_period_count" min="0" value="<?= FreshRSS_Context::userConf()->volatile['keep_period_count'] ?>"
+						data-leave-validation="<?= FreshRSS_Context::userConf()->volatile['keep_period_count'] ?>"/>
+					<select class="number" name="keep_period_unit" id="keep_period_unit" data-leave-validation="<?= FreshRSS_Context::userConf()->volatile['keep_period_unit'] ?>">
 						<option></option>
-						<option value="P1Y" <?= 'P1Y' === FreshRSS_Context::$user_conf->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.years') ?></option>
-						<option value="P1M" <?= 'P1M' === FreshRSS_Context::$user_conf->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.months') ?></option>
-						<option value="P1W" <?= 'P1W' === FreshRSS_Context::$user_conf->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.weeks') ?></option>
-						<option value="P1D" <?= 'P1D' === FreshRSS_Context::$user_conf->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.days') ?></option>
-						<option value="PT1H" <?= 'PT1H' === FreshRSS_Context::$user_conf->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.hours') ?></option>
+						<option value="P1Y" <?= 'P1Y' === FreshRSS_Context::userConf()->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.years') ?></option>
+						<option value="P1M" <?= 'P1M' === FreshRSS_Context::userConf()->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.months') ?></option>
+						<option value="P1W" <?= 'P1W' === FreshRSS_Context::userConf()->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.weeks') ?></option>
+						<option value="P1D" <?= 'P1D' === FreshRSS_Context::userConf()->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.days') ?></option>
+						<option value="PT1H" <?= 'PT1H' === FreshRSS_Context::userConf()->volatile['keep_period_unit'] ? 'selected="selected"' : '' ?>><?= _t('gen.period.hours') ?></option>
 					</select>
 				</label>
 			</div>
@@ -81,8 +81,8 @@
 			<div class="group-controls">
 				<label class="checkbox" for="keep_favourites">
 					<input type="checkbox" name="keep_favourites" id="keep_favourites" value="1"<?=
-						FreshRSS_Context::$user_conf->archiving['keep_favourites'] !== false ? ' checked="checked"' : '' ?>
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->archiving['keep_favourites'] !== false ? 1 : 0 ?>"/>
+						FreshRSS_Context::userConf()->archiving['keep_favourites'] !== false ? ' checked="checked"' : '' ?>
+						data-leave-validation="<?= FreshRSS_Context::userConf()->archiving['keep_favourites'] !== false ? 1 : 0 ?>"/>
 					<?= _t('conf.archiving.keep_favourites') ?>
 				</label>
 			</div>
@@ -92,8 +92,8 @@
 			<div class="group-controls">
 				<label class="checkbox" for="keep_labels">
 					<input type="checkbox" name="keep_labels" id="keep_labels" value="1"<?=
-						FreshRSS_Context::$user_conf->archiving['keep_labels'] !== false ? ' checked="checked"' : '' ?>
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->archiving['keep_labels'] !== false ? 1 : 0 ?>"/>
+						FreshRSS_Context::userConf()->archiving['keep_labels'] !== false ? ' checked="checked"' : '' ?>
+						data-leave-validation="<?= FreshRSS_Context::userConf()->archiving['keep_labels'] !== false ? 1 : 0 ?>"/>
 					<?= _t('conf.archiving.keep_labels') ?>
 				</label>
 			</div>
@@ -103,8 +103,8 @@
 			<div class="group-controls">
 				<label class="checkbox" for="keep_unreads">
 					<input type="checkbox" name="keep_unreads" id="keep_unreads" value="1"<?=
-						FreshRSS_Context::$user_conf->archiving['keep_unreads'] ? ' checked="checked"' : '' ?>
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->archiving['keep_unreads'] ? 1 : 0 ?>"/>
+						FreshRSS_Context::userConf()->archiving['keep_unreads'] ? ' checked="checked"' : '' ?>
+						data-leave-validation="<?= FreshRSS_Context::userConf()->archiving['keep_unreads'] ? 1 : 0 ?>"/>
 					<?= _t('conf.archiving.keep_unreads') ?>
 				</label>
 			</div>
@@ -114,8 +114,8 @@
 			<div class="group-controls">
 				<label for="keep_min_default"><?= _t('conf.archiving.keep_min_by_feed') ?>
 					<input type="number" id="keep_min_default" name="keep_min_default" min="0" value="<?=
-						FreshRSS_Context::$user_conf->archiving['keep_min'] ?>"
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->archiving['keep_min'] ?>">
+						FreshRSS_Context::userConf()->archiving['keep_min'] ?>"
+						data-leave-validation="<?= FreshRSS_Context::userConf()->archiving['keep_min'] ?>">
 				</label>
 			</div>
 		</div>
diff --git a/app/views/configure/display.phtml b/app/views/configure/display.phtml
index b48dcbf71..d373c0bb5 100644
--- a/app/views/configure/display.phtml
+++ b/app/views/configure/display.phtml
@@ -16,10 +16,10 @@
 		<div class="form-group">
 			<label class="group-name" for="language"><?= _t('conf.display.language') ?></label>
 			<div class="group-controls">
-				<select name="language" id="language" data-leave-validation="<?= FreshRSS_Context::$user_conf->language ?>">
+				<select name="language" id="language" data-leave-validation="<?= FreshRSS_Context::userConf()->language ?>">
 				<?php $languages = Minz_Translate::availableLanguages(); ?>
 				<?php foreach ($languages as $lang) { ?>
-				<option value="<?= $lang ?>"<?= FreshRSS_Context::$user_conf->language === $lang ? ' selected="selected"' : '' ?>><?= _t('gen.lang.' . $lang) ?></option>
+				<option value="<?= $lang ?>"<?= FreshRSS_Context::userConf()->language === $lang ? ' selected="selected"' : '' ?>><?= _t('gen.lang.' . $lang) ?></option>
 				<?php } ?>
 				</select>
 			</div>
@@ -28,15 +28,15 @@
 		<div class="form-group">
 			<label class="group-name" for="timezone"><?= _t('conf.display.timezone') ?></label>
 			<div class="group-controls">
-				<select name="timezone" id="timezone" data-leave-validation="<?= FreshRSS_Context::$user_conf->timezone ?>">
+				<select name="timezone" id="timezone" data-leave-validation="<?= FreshRSS_Context::userConf()->timezone ?>">
 				<?php
 					$timezones = array_merge([''], DateTimeZone::listIdentifiers());
-					if (!in_array(FreshRSS_Context::$user_conf->timezone, $timezones, true)) {
-						FreshRSS_Context::$user_conf->timezone = '';
+					if (!in_array(FreshRSS_Context::userConf()->timezone, $timezones, true)) {
+						FreshRSS_Context::userConf()->timezone = '';
 					}
 				?>
 				<?php foreach ($timezones as $timezone): ?>
-				<option value="<?= $timezone ?>"<?= FreshRSS_Context::$user_conf->timezone === $timezone ? ' selected="selected"' : '' ?>>
+				<option value="<?= $timezone ?>"<?= FreshRSS_Context::userConf()->timezone === $timezone ? ' selected="selected"' : '' ?>>
 					<?= $timezone == '' ? _t('gen.short.by_default') . ' (' . FreshRSS_Context::defaultTimeZone() . ')' : $timezone ?>
 				</option>
 				<?php endforeach; ?>
@@ -49,16 +49,16 @@
 			<div class="group-controls">
 				<ul class="theme-preview-list">
 					<?php $slides = count($this->themes); $i = 1; $themeAvailable = false; ?>
-					<?php  /** @var array{'id':string, 'deprecated':bool, 'author':string, 'name':string, 'description':string} $theme */
-						foreach($this->themes as $theme) { ?>
-						<?php if (FreshRSS_Context::$user_conf->theme === $theme['id']) {
+					<?php
+						foreach ($this->themes as $theme) { ?>
+						<?php if (FreshRSS_Context::userConf()->theme === $theme['id']) {
 							$checked = 'checked="checked"';
 							$themeAvailable = true;
 						} else {
 							$checked = '';
 						} ?>
 						<input type="radio" name="theme" id="img-<?= $i ?>" <?= $checked ?> value="<?= $theme['id'] ?>"
-							data-leave-validation="<?= (FreshRSS_Context::$user_conf->theme === $theme['id']) ? 1 : 0 ?>" />
+							data-leave-validation="<?= (FreshRSS_Context::userConf()->theme === $theme['id']) ? 1 : 0 ?>" />
 						<li class="preview-container">
 							<div class="preview">
 								<img src="<?= Minz_Url::display('/themes/' . $theme['id'] . '/thumbs/original.png') ?>" loading="lazy" />
@@ -98,7 +98,7 @@
 								<label for="img-<?= $i - 1 ?>" class="prev">‹</label>
 							</div>
 							<div class="properties alert-error">
-								<div><?= _t('conf.display.theme_not_available', FreshRSS_Context::$user_conf->theme)?></div>
+								<div><?= _t('conf.display.theme_not_available', FreshRSS_Context::userConf()->theme)?></div>
 							</div>
 						</li>
 					<?php }?>
@@ -109,14 +109,14 @@
 		<div class="form-group">
 			<label class="group-name" for="darkMode"><?= _t('conf.display.darkMode') ?></label>
 			<div class="group-controls">
-				<select name="darkMode" id="darkMode" data-leave-validation="<?= FreshRSS_Context::$user_conf->darkMode ?>">
-					<option value="no"<?= FreshRSS_Context::$user_conf->darkMode === 'no' ? ' selected' : '' ?>><?= _t('conf.display.darkMode.no') ?></option>
-					<option value="auto"<?= FreshRSS_Context::$user_conf->darkMode === 'auto' ? ' selected' : '' ?>><?= _t('conf.display.darkMode.auto') ?></option>
+				<select name="darkMode" id="darkMode" data-leave-validation="<?= FreshRSS_Context::userConf()->darkMode ?>">
+					<option value="no"<?= FreshRSS_Context::userConf()->darkMode === 'no' ? ' selected' : '' ?>><?= _t('conf.display.darkMode.no') ?></option>
+					<option value="auto"<?= FreshRSS_Context::userConf()->darkMode === 'auto' ? ' selected' : '' ?>><?= _t('conf.display.darkMode.auto') ?></option>
 				</select>
 			</div>
 		</div>
 
-		<?php $width = FreshRSS_Context::$user_conf->content_width; ?>
+		<?php $width = FreshRSS_Context::userConf()->content_width; ?>
 		<div class="form-group">
 			<label class="group-name" for="content_width"><?= _t('conf.display.width.content') ?></label>
 			<div class="group-controls">
@@ -137,7 +137,7 @@
 			</div>
 		</div>
 
-		<?php $topline_website = FreshRSS_Context::$user_conf->topline_website; ?>
+		<?php $topline_website = FreshRSS_Context::userConf()->topline_website; ?>
 		<div class="form-group">
 			<label class="group-name" for="topline_website"><?= _t('conf.display.website.label') ?></label>
 			<div class="group-controls">
@@ -158,7 +158,7 @@
 			</div>
 		</div>
 
-		<?php $topline_thumbnail = FreshRSS_Context::$user_conf->topline_thumbnail; ?>
+		<?php $topline_thumbnail = FreshRSS_Context::userConf()->topline_thumbnail; ?>
 		<div class="form-group">
 			<label class="group-name" for="topline_thumbnail"><?= _t('conf.display.thumbnail.label') ?></label>
 			<div class="group-controls">
@@ -201,50 +201,50 @@
 						<tr>
 							<th><?= _t('conf.display.icon.top_line') ?></th>
 							<td><input type="checkbox" name="topline_read" value="1"<?=
-								FreshRSS_Context::$user_conf->topline_read ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->topline_read ?>" /></td>
+								FreshRSS_Context::userConf()->topline_read ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->topline_read ?>" /></td>
 							<td><input type="checkbox" name="topline_favorite" value="1"<?=
-								FreshRSS_Context::$user_conf->topline_favorite ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->topline_favorite ?>" /></td>
+								FreshRSS_Context::userConf()->topline_favorite ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->topline_favorite ?>" /></td>
 							<td><input type="checkbox" disabled="disabled" /></td>
 							<td><input type="checkbox" disabled="disabled" /></td>
 							<td><input type="checkbox" disabled="disabled" /></td>
 							<td><input type="checkbox" name="topline_summary" value="1"<?=
-								FreshRSS_Context::$user_conf->topline_summary ? 'checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->topline_summary ?>" /></td>
+								FreshRSS_Context::userConf()->topline_summary ? 'checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->topline_summary ?>" /></td>
 							<td><input type="checkbox" name="topline_display_authors" value="1"<?=
-								FreshRSS_Context::$user_conf->topline_display_authors ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->topline_display_authors ?>" /></td>
+								FreshRSS_Context::userConf()->topline_display_authors ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->topline_display_authors ?>" /></td>
 							<td><input type="checkbox" name="topline_date" value="1"<?=
-								FreshRSS_Context::$user_conf->topline_date ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->topline_date ?>" /></td>
-							<td><input type="checkbox" name="topline_link" value="1"<?= FreshRSS_Context::$user_conf->topline_link ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->topline_link ?>" /></td>
+								FreshRSS_Context::userConf()->topline_date ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->topline_date ?>" /></td>
+							<td><input type="checkbox" name="topline_link" value="1"<?= FreshRSS_Context::userConf()->topline_link ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->topline_link ?>" /></td>
 						</tr><tr>
 							<th><?= _t('conf.display.icon.bottom_line') ?></th>
 							<td><input type="checkbox" name="bottomline_read" value="1"<?=
-								FreshRSS_Context::$user_conf->bottomline_read ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->bottomline_read ?>" /></td>
+								FreshRSS_Context::userConf()->bottomline_read ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->bottomline_read ?>" /></td>
 							<td><input type="checkbox" name="bottomline_favorite" value="1"<?=
-								FreshRSS_Context::$user_conf->bottomline_favorite ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->bottomline_favorite ?>" /></td>
+								FreshRSS_Context::userConf()->bottomline_favorite ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->bottomline_favorite ?>" /></td>
 							<td><input type="checkbox" name="bottomline_myLabels" value="1"<?=
-								FreshRSS_Context::$user_conf->bottomline_myLabels ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->bottomline_myLabels ?>" /></td>
+								FreshRSS_Context::userConf()->bottomline_myLabels ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->bottomline_myLabels ?>" /></td>
 							<td><input type="checkbox" name="bottomline_tags" value="1"<?=
-								FreshRSS_Context::$user_conf->bottomline_tags ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->bottomline_tags ?>" /></td>
+								FreshRSS_Context::userConf()->bottomline_tags ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->bottomline_tags ?>" /></td>
 							<td><input type="checkbox" name="bottomline_sharing" value="1"<?=
-								FreshRSS_Context::$user_conf->bottomline_sharing ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->bottomline_sharing ?>" /></td>
+								FreshRSS_Context::userConf()->bottomline_sharing ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->bottomline_sharing ?>" /></td>
 							<td><input type="checkbox" disabled="disabled" /></td>
 							<td><input type="checkbox" disabled="disabled" /></td>
 							<td><input type="checkbox" name="bottomline_date" value="1"<?=
-								FreshRSS_Context::$user_conf->bottomline_date ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->bottomline_date ?>" /></td>
+								FreshRSS_Context::userConf()->bottomline_date ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->bottomline_date ?>" /></td>
 							<td><input type="checkbox" name="bottomline_link" value="1"<?=
-								FreshRSS_Context::$user_conf->bottomline_link ? ' checked="checked"' : '' ?>
-								data-leave-validation="<?= FreshRSS_Context::$user_conf->bottomline_link ?>" /></td>
+								FreshRSS_Context::userConf()->bottomline_link ? ' checked="checked"' : '' ?>
+								data-leave-validation="<?= FreshRSS_Context::userConf()->bottomline_link ?>" /></td>
 						</tr>
 					</tbody>
 				</table>
@@ -255,8 +255,8 @@
 			<label class="group-name" for="html5_notif_timeout"><?= _t('conf.display.notif_html5.timeout') ?></label>
 			<div class="group-controls">
 				<input type="number" id="html5_notif_timeout" name="html5_notif_timeout" value="<?=
-					FreshRSS_Context::$user_conf->html5_notif_timeout ?>"
-					data-leave-validation="<?= FreshRSS_Context::$user_conf->html5_notif_timeout ?>" /> <?= _t('conf.display.notif_html5.seconds') ?>
+					FreshRSS_Context::userConf()->html5_notif_timeout ?>"
+					data-leave-validation="<?= FreshRSS_Context::userConf()->html5_notif_timeout ?>" /> <?= _t('conf.display.notif_html5.seconds') ?>
 			</div>
 		</div>
 
@@ -264,8 +264,8 @@
 			<div class="group-controls">
 				<label class="checkbox" for="show_nav_buttons">
 					<input type="checkbox" name="show_nav_buttons" id="show_nav_buttons" value="1"<?=
-						FreshRSS_Context::$user_conf->show_nav_buttons ? ' checked="checked"' : '' ?>
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->show_nav_buttons ?>" />
+						FreshRSS_Context::userConf()->show_nav_buttons ? ' checked="checked"' : '' ?>
+						data-leave-validation="<?= FreshRSS_Context::userConf()->show_nav_buttons ?>" />
 					<?= _t('conf.display.show_nav_buttons') ?>
 				</label>
 			</div>
diff --git a/app/views/configure/integration.phtml b/app/views/configure/integration.phtml
index fc3cc2a32..973ee128f 100644
--- a/app/views/configure/integration.phtml
+++ b/app/views/configure/integration.phtml
@@ -57,8 +57,11 @@
 		</template>
 
 		<?php
-			foreach (FreshRSS_Context::$user_conf->sharing as $key => $share_options) {
+			foreach (FreshRSS_Context::userConf()->sharing as $key => $share_options) {
 				$share = FreshRSS_Share::get($share_options['type']);
+				if ($share === null) {
+					continue;
+				}
 				$share->update($share_options);
 		?>
 		<formgroup class="group-share dragbox" id="group-share-<?= $key ?>">
diff --git a/app/views/configure/reading.phtml b/app/views/configure/reading.phtml
index 94cf51977..17fdbe7c3 100644
--- a/app/views/configure/reading.phtml
+++ b/app/views/configure/reading.phtml
@@ -17,10 +17,10 @@
 			<div class="form-group">
 				<label class="group-name" for="view_mode"><?= _t('conf.reading.view.default') ?></label>
 				<div class="group-controls">
-					<select name="view_mode" id="view_mode" data-leave-validation="<?= FreshRSS_Context::$user_conf->view_mode ?>">
-						<option value="normal"<?= FreshRSS_Context::$user_conf->view_mode === 'normal' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.view.normal') ?></option>
-						<option value="reader"<?= FreshRSS_Context::$user_conf->view_mode === 'reader' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.view.reader') ?></option>
-						<option value="global"<?= FreshRSS_Context::$user_conf->view_mode === 'global' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.view.global') ?></option>
+					<select name="view_mode" id="view_mode" data-leave-validation="<?= FreshRSS_Context::userConf()->view_mode ?>">
+						<option value="normal"<?= FreshRSS_Context::userConf()->view_mode === 'normal' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.view.normal') ?></option>
+						<option value="reader"<?= FreshRSS_Context::userConf()->view_mode === 'reader' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.view.reader') ?></option>
+						<option value="global"<?= FreshRSS_Context::userConf()->view_mode === 'global' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.view.global') ?></option>
 					</select>
 				</div>
 			</div>
@@ -28,10 +28,10 @@
 			<div class="form-group">
 				<label class="group-name" for="default_view"><?= _t('conf.reading.show') ?></label>
 				<div class="group-controls">
-					<select name="default_view" id="default_view" data-leave-validation="<?= FreshRSS_Context::$user_conf->default_view ?>">
-						<option value="adaptive"<?= FreshRSS_Context::$user_conf->default_view === 'adaptive' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.show.adaptive') ?></option>
-						<option value="all"<?= FreshRSS_Context::$user_conf->default_view === 'all' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.show.all_articles') ?></option>
-						<option value="unread"<?= FreshRSS_Context::$user_conf->default_view === 'unread' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.show.unread') ?></option>
+					<select name="default_view" id="default_view" data-leave-validation="<?= FreshRSS_Context::userConf()->default_view ?>">
+						<option value="adaptive"<?= FreshRSS_Context::userConf()->default_view === 'adaptive' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.show.adaptive') ?></option>
+						<option value="all"<?= FreshRSS_Context::userConf()->default_view === 'all' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.show.all_articles') ?></option>
+						<option value="unread"<?= FreshRSS_Context::userConf()->default_view === 'unread' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.show.unread') ?></option>
 					</select>
 				</div>
 			</div>
@@ -40,8 +40,8 @@
 				<label class="group-name" for="posts_per_page"><?= _t('conf.reading.articles_per_page') ?></label>
 				<div class="group-controls">
 					<input type="number" id="posts_per_page" name="posts_per_page" value="<?=
-						FreshRSS_Context::$user_conf->posts_per_page ?>" min="5" max="500"
-						data-leave-validation="<?= FreshRSS_Context::$user_conf->posts_per_page ?>"/>
+						FreshRSS_Context::userConf()->posts_per_page ?>" min="5" max="500"
+						data-leave-validation="<?= FreshRSS_Context::userConf()->posts_per_page ?>"/>
 					<p class="help"><?= _i('help') ?> <?= _t('conf.reading.number_divided_when_reader') ?></p>
 				</div>
 			</div>
@@ -50,8 +50,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="auto_load_more">
 						<input type="checkbox" name="auto_load_more" id="auto_load_more" value="1"<?=
-							FreshRSS_Context::$user_conf->auto_load_more ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->auto_load_more ?>"/>
+							FreshRSS_Context::userConf()->auto_load_more ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->auto_load_more ?>"/>
 						<?= _t('conf.reading.auto_load_more') ?>
 						<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 					</label>
@@ -61,9 +61,9 @@
 			<div class="form-group">
 				<label class="group-name" for="sort_order"><?= _t('conf.reading.sort') ?></label>
 				<div class="group-controls">
-					<select name="sort_order" id="sort_order" data-leave-validation="<?= FreshRSS_Context::$user_conf->sort_order ?>">
-						<option value="DESC"<?= FreshRSS_Context::$user_conf->sort_order === 'DESC' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.sort.newer_first') ?></option>
-						<option value="ASC"<?= FreshRSS_Context::$user_conf->sort_order === 'ASC' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.sort.older_first') ?></option>
+					<select name="sort_order" id="sort_order" data-leave-validation="<?= FreshRSS_Context::userConf()->sort_order ?>">
+						<option value="DESC"<?= FreshRSS_Context::userConf()->sort_order === 'DESC' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.sort.newer_first') ?></option>
+						<option value="ASC"<?= FreshRSS_Context::userConf()->sort_order === 'ASC' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.sort.older_first') ?></option>
 					</select>
 				</div>
 			</div>
@@ -75,14 +75,14 @@
 			<div class="form-group">
 				<label class="group-name" for="display_categories"><?= _t('conf.reading.display_categories_unfolded') ?></label>
 				<div class="group-controls">
-					<select name="display_categories" id="display_categories" data-leave-validation="<?= FreshRSS_Context::$user_conf->display_categories ?>">
-						<option value="active"<?= FreshRSS_Context::$user_conf->display_categories === 'active' ? ' selected="selected"' : '' ?>><?=
+					<select name="display_categories" id="display_categories" data-leave-validation="<?= FreshRSS_Context::userConf()->display_categories ?>">
+						<option value="active"<?= FreshRSS_Context::userConf()->display_categories === 'active' ? ' selected="selected"' : '' ?>><?=
 							_t('conf.reading.show.active_category') ?></option>
-						<option value="remember"<?= FreshRSS_Context::$user_conf->display_categories === 'remember' ? ' selected="selected"' : '' ?>><?=
+						<option value="remember"<?= FreshRSS_Context::userConf()->display_categories === 'remember' ? ' selected="selected"' : '' ?>><?=
 							_t('conf.reading.show.remember_categories') ?></option>
-						<option value="all"<?= FreshRSS_Context::$user_conf->display_categories === 'all' ? ' selected="selected"' : '' ?>><?=
+						<option value="all"<?= FreshRSS_Context::userConf()->display_categories === 'all' ? ' selected="selected"' : '' ?>><?=
 							_t('conf.reading.show.all_categories') ?></option>
-						<option value="none"<?= FreshRSS_Context::$user_conf->display_categories === 'none' ? ' selected="selected"' : '' ?>><?=
+						<option value="none"<?= FreshRSS_Context::userConf()->display_categories === 'none' ? ' selected="selected"' : '' ?>><?=
 							_t('conf.reading.show.no_category') ?></option>
 					</select>
 				</div>
@@ -92,8 +92,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="show_fav_unread">
 						<input type="checkbox" name="show_fav_unread" id="show_fav_unread" value="1"<?=
-							FreshRSS_Context::$user_conf->show_fav_unread ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->show_fav_unread ?>"/>
+							FreshRSS_Context::userConf()->show_fav_unread ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->show_fav_unread ?>"/>
 						<?= _t('conf.reading.always_show_favorites') ?>
 						<p class="help"><?= _i('help') ?> <?= _t('conf.reading.show_fav_unread_help') ?></p>
 					</label>
@@ -104,8 +104,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="hide_read_feeds">
 						<input type="checkbox" name="hide_read_feeds" id="hide_read_feeds" value="1"<?=
-							FreshRSS_Context::$user_conf->hide_read_feeds ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->hide_read_feeds ?>"/>
+							FreshRSS_Context::userConf()->hide_read_feeds ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->hide_read_feeds ?>"/>
 						<?= _t('conf.reading.hide_read_feeds') ?>
 					</label>
 				</div>
@@ -117,32 +117,32 @@
 			<div class="form-group">
 				<label class="group-name" for="show_feed_name"><?= _t('conf.reading.article.feed_title') ?></label>
 				<div class="group-controls">
-					<select name="show_feed_name" id="show_feed_name" data-leave-validation="<?= FreshRSS_Context::$user_conf->show_feed_name ?>">
-						<option value="0"<?= FreshRSS_Context::$user_conf->show_feed_name === '0' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.feed_name.none') ?></option>
-						<option value="t"<?= FreshRSS_Context::$user_conf->show_feed_name === 't' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.feed_name.above_title') ?></option>
-						<option value="a"<?= FreshRSS_Context::$user_conf->show_feed_name === 'a' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.feed_name.with_authors') ?></option>
+					<select name="show_feed_name" id="show_feed_name" data-leave-validation="<?= FreshRSS_Context::userConf()->show_feed_name ?>">
+						<option value="0"<?= FreshRSS_Context::userConf()->show_feed_name === '0' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.feed_name.none') ?></option>
+						<option value="t"<?= FreshRSS_Context::userConf()->show_feed_name === 't' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.feed_name.above_title') ?></option>
+						<option value="a"<?= FreshRSS_Context::userConf()->show_feed_name === 'a' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.feed_name.with_authors') ?></option>
 					</select>
 				</div>
 			</div>
 			<div class="form-group">
 				<label class="group-name" for="show_author_date"><?= _t('conf.reading.article.authors_date') ?></label>
 				<div class="group-controls">
-					<select name="show_author_date" id="show_author_date" data-leave-validation="<?= FreshRSS_Context::$user_conf->show_author_date ?>">
-						<option value="0" <?= FreshRSS_Context::$user_conf->show_author_date === '0' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.none') ?></option>
-						<option value="h" <?= FreshRSS_Context::$user_conf->show_author_date === 'h' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.header') ?></option>
-						<option value="f" <?= FreshRSS_Context::$user_conf->show_author_date === 'f' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.footer') ?></option>
-						<option value="b" <?= FreshRSS_Context::$user_conf->show_author_date === 'b' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.both') ?></option>
+					<select name="show_author_date" id="show_author_date" data-leave-validation="<?= FreshRSS_Context::userConf()->show_author_date ?>">
+						<option value="0" <?= FreshRSS_Context::userConf()->show_author_date === '0' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.none') ?></option>
+						<option value="h" <?= FreshRSS_Context::userConf()->show_author_date === 'h' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.header') ?></option>
+						<option value="f" <?= FreshRSS_Context::userConf()->show_author_date === 'f' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.footer') ?></option>
+						<option value="b" <?= FreshRSS_Context::userConf()->show_author_date === 'b' ? ' selected="selected"' : '' ?>><?= _t('conf.reading.article.authors_date.both') ?></option>
 					</select>
 				</div>
 			</div>
 			<div class="form-group">
 				<label class="group-name" for="show_tags"><?= _t('conf.reading.article.tags') ?></label>
 				<div class="group-controls">
-					<select class="select-input-changer" name="show_tags" id="show_tags" data-name="show_tags_max" data-leave-validation="<?= FreshRSS_Context::$user_conf->show_tags ?>">
-						<option value="0" <?= FreshRSS_Context::$user_conf->show_tags === '0' ? ' selected="selected"' : '' ?> data-input-visible="false"><?= _t('conf.reading.article.tags.none') ?></option>
-						<option value="h" <?= FreshRSS_Context::$user_conf->show_tags === 'h' ? ' selected="selected"' : '' ?> data-input-visible="true"><?= _t('conf.reading.article.tags.header') ?></option>
-						<option value="f" <?= FreshRSS_Context::$user_conf->show_tags === 'f' ? ' selected="selected"' : '' ?> data-input-visible="true"><?= _t('conf.reading.article.tags.footer') ?></option>
-						<option value="b" <?= FreshRSS_Context::$user_conf->show_tags === 'b' ? ' selected="selected"' : '' ?> data-input-visible="true"><?= _t('conf.reading.article.tags.both') ?></option>
+					<select class="select-input-changer" name="show_tags" id="show_tags" data-name="show_tags_max" data-leave-validation="<?= FreshRSS_Context::userConf()->show_tags ?>">
+						<option value="0" <?= FreshRSS_Context::userConf()->show_tags === '0' ? ' selected="selected"' : '' ?> data-input-visible="false"><?= _t('conf.reading.article.tags.none') ?></option>
+						<option value="h" <?= FreshRSS_Context::userConf()->show_tags === 'h' ? ' selected="selected"' : '' ?> data-input-visible="true"><?= _t('conf.reading.article.tags.header') ?></option>
+						<option value="f" <?= FreshRSS_Context::userConf()->show_tags === 'f' ? ' selected="selected"' : '' ?> data-input-visible="true"><?= _t('conf.reading.article.tags.footer') ?></option>
+						<option value="b" <?= FreshRSS_Context::userConf()->show_tags === 'b' ? ' selected="selected"' : '' ?> data-input-visible="true"><?= _t('conf.reading.article.tags.both') ?></option>
 					</select>
 					<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 				</div>
@@ -150,7 +150,7 @@
 			<div class="form-group" id="show_tags_max-block">
 				<label class="group-name" for="show_tags_max"><?= _t('conf.reading.article.tags_max') ?></label>
 				<div class="group-controls">
-					<input type="number" id="show_tags_max" name="show_tags_max" value="<?= FreshRSS_Context::$user_conf->show_tags_max ?>" min="0" data-leave-validation="<?= FreshRSS_Context::$user_conf->show_tags_max ?>" data-number="2" />
+					<input type="number" id="show_tags_max" name="show_tags_max" value="<?= FreshRSS_Context::userConf()->show_tags_max ?>" min="0" data-leave-validation="<?= FreshRSS_Context::userConf()->show_tags_max ?>" data-number="2" />
 					<p class="help"><?= _i('help') ?> <?= _t('conf.reading.article.tags_max.help') ?></p>
 				</div>
 			</div>
@@ -162,8 +162,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="display_posts">
 						<input type="checkbox" name="display_posts" id="display_posts" value="1"<?=
-							FreshRSS_Context::$user_conf->display_posts ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->display_posts ?>"/>
+							FreshRSS_Context::userConf()->display_posts ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->display_posts ?>"/>
 						<?= _t('conf.reading.display_articles_unfolded') ?>
 						<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 					</label>
@@ -174,8 +174,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="sticky_post">
 						<input type="checkbox" name="sticky_post" id="sticky_post" value="1"<?=
-							FreshRSS_Context::$user_conf->sticky_post ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->sticky_post ?>"/>
+							FreshRSS_Context::userConf()->sticky_post ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->sticky_post ?>"/>
 						<?= _t('conf.reading.sticky_post') ?>
 						<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 					</label>
@@ -186,8 +186,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="sides_close_article">
 						<input type="checkbox" name="sides_close_article" id="sides_close_article" value="1"<?=
-							FreshRSS_Context::$user_conf->sides_close_article ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->sides_close_article ?>"/>
+							FreshRSS_Context::userConf()->sides_close_article ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->sides_close_article ?>"/>
 						<?= _t('conf.reading.sides_close_article') ?>
 						<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 					</label>
@@ -201,8 +201,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="auto_remove_article">
 						<input type="checkbox" name="auto_remove_article" id="auto_remove_article" value="1"<?=
-							FreshRSS_Context::$user_conf->auto_remove_article ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->auto_remove_article ?>"/>
+							FreshRSS_Context::userConf()->auto_remove_article ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->auto_remove_article ?>"/>
 						<?= _t('conf.reading.auto_remove_article') ?>
 						<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 					</label>
@@ -213,8 +213,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="reading_confirm">
 						<input type="checkbox" name="reading_confirm" id="reading_confirm" value="1"<?=
-							FreshRSS_Context::$user_conf->reading_confirm ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->reading_confirm ?>"/>
+							FreshRSS_Context::userConf()->reading_confirm ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->reading_confirm ?>"/>
 						<?= _t('conf.reading.confirm_enabled') ?>
 						<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 					</label>
@@ -226,8 +226,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="onread_jump_next">
 						<input type="checkbox" name="onread_jump_next" id="onread_jump_next" value="1"<?=
-							FreshRSS_Context::$user_conf->onread_jump_next ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->onread_jump_next ?>"/>
+							FreshRSS_Context::userConf()->onread_jump_next ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->onread_jump_next ?>"/>
 						<?= _t('conf.reading.jump_next') ?>
 					</label>
 				</div>
@@ -237,8 +237,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="mark_updated_article_unread">
 						<input type="checkbox" name="mark_updated_article_unread" id="mark_updated_article_unread" value="1"<?=
-							FreshRSS_Context::$user_conf->mark_updated_article_unread ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->mark_updated_article_unread ?>"/>
+							FreshRSS_Context::userConf()->mark_updated_article_unread ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->mark_updated_article_unread ?>"/>
 						<?= _t('conf.reading.mark_updated_article_unread') ?>
 					</label>
 				</div>
@@ -249,8 +249,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="check_open_article">
 						<input type="checkbox" name="mark_open_article" id="check_open_article" value="1"<?=
-							FreshRSS_Context::$user_conf->mark_when['article'] ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->mark_when['article'] ?>"/>
+							FreshRSS_Context::userConf()->mark_when['article'] ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->mark_when['article'] ?>"/>
 						<?= _t('conf.reading.read.article_viewed') ?>
 					</label>
 				</div>
@@ -261,8 +261,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="check_open_site">
 						<input type="checkbox" name="mark_open_site" id="check_open_site" value="1"<?=
-							FreshRSS_Context::$user_conf->mark_when['site'] ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->mark_when['site'] ?>"/>
+							FreshRSS_Context::userConf()->mark_when['site'] ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->mark_when['site'] ?>"/>
 						<?= _t('conf.reading.read.article_open_on_website') ?>
 					</label>
 				</div>
@@ -273,8 +273,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="check_scroll">
 						<input type="checkbox" name="mark_scroll" id="check_scroll" value="1"<?=
-							FreshRSS_Context::$user_conf->mark_when['scroll'] ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->mark_when['scroll'] ?>"/>
+							FreshRSS_Context::userConf()->mark_when['scroll'] ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->mark_when['scroll'] ?>"/>
 						<?= _t('conf.reading.read.scroll') ?>
 					</label>
 				</div>
@@ -285,8 +285,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="check_focus">
 						<input type="checkbox" name="mark_focus" id="check_focus" value="1"<?=
-							FreshRSS_Context::$user_conf->mark_when['focus'] ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->mark_when['focus'] ?>" />
+							FreshRSS_Context::userConf()->mark_when['focus'] ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->mark_when['focus'] ?>" />
 						<?= _t('conf.reading.read.focus') ?>
 					</label>
 				</div>
@@ -297,10 +297,10 @@
 				<div class="group-controls">
 					<label class="checkbox" for="enable_read_when_same_title_in_feed">
 						<input type="checkbox" name="enable_read_when_same_title_in_feed" id="enable_read_when_same_title_in_feed" value="1"<?=
-							empty(FreshRSS_Context::$user_conf->mark_when['same_title_in_feed']) ? '' : ' checked="checked"' ?>
-							data-leave-validation="<?= empty(FreshRSS_Context::$user_conf->mark_when['same_title_in_feed']) ? 0 : 1 ?>"/>
+							empty(FreshRSS_Context::userConf()->mark_when['same_title_in_feed']) ? '' : ' checked="checked"' ?>
+							data-leave-validation="<?= empty(FreshRSS_Context::userConf()->mark_when['same_title_in_feed']) ? 0 : 1 ?>"/>
 						<?= _t('conf.reading.read.when_same_title') ?>
-						<?php $read_when_same_title_in_feed = empty(FreshRSS_Context::$user_conf->mark_when['same_title_in_feed']) ? 25 : FreshRSS_Context::$user_conf->mark_when['same_title_in_feed']; ?>
+						<?php $read_when_same_title_in_feed = empty(FreshRSS_Context::userConf()->mark_when['same_title_in_feed']) ? 25 : FreshRSS_Context::userConf()->mark_when['same_title_in_feed']; ?>
 						<input type="number" id="read_when_same_title_in_feed" name="read_when_same_title_in_feed" min="0"
 							value="<?= $read_when_same_title_in_feed ?>" data-leave-validation="<?= $read_when_same_title_in_feed ?>" />
 					</label>
@@ -312,8 +312,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="mark_upon_reception">
 						<input type="checkbox" name="mark_upon_reception" id="mark_upon_reception" value="1"<?=
-							FreshRSS_Context::$user_conf->mark_when['reception'] ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->mark_when['reception'] ?>"/>
+							FreshRSS_Context::userConf()->mark_when['reception'] ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->mark_when['reception'] ?>"/>
 						<?= _t('conf.reading.read.upon_reception') ?>
 					</label>
 				</div>
@@ -324,8 +324,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="read_upon_gone">
 						<input type="checkbox" name="read_upon_gone" id="read_upon_gone" value="1"<?=
-							FreshRSS_Context::$user_conf->mark_when['gone'] ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->mark_when['gone'] ?>"/>
+							FreshRSS_Context::userConf()->mark_when['gone'] ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->mark_when['gone'] ?>"/>
 						<?= _t('conf.reading.read.upon_gone') ?>
 					</label>
 				</div>
@@ -335,10 +335,10 @@
 				<div class="group-controls">
 					<label class="checkbox" for="keep_max_n_unread">
 						<input type="checkbox" name="enable_keep_max_n_unread" id="enable_keep_max_n_unread" value="1"<?=
-							empty(FreshRSS_Context::$user_conf->mark_when['max_n_unread']) ? '' : ' checked="checked"' ?>
-							data-leave-validation="<?= empty(FreshRSS_Context::$user_conf->mark_when['max_n_unread']) ? 0 : 1 ?>"/>
+							empty(FreshRSS_Context::userConf()->mark_when['max_n_unread']) ? '' : ' checked="checked"' ?>
+							data-leave-validation="<?= empty(FreshRSS_Context::userConf()->mark_when['max_n_unread']) ? 0 : 1 ?>"/>
 						<?= _t('conf.reading.read.keep_max_n_unread') ?>
-						<?php $keep_max_n_unread = empty(FreshRSS_Context::$user_conf->mark_when['max_n_unread']) ? 1000 : FreshRSS_Context::$user_conf->mark_when['max_n_unread']; ?>
+						<?php $keep_max_n_unread = empty(FreshRSS_Context::userConf()->mark_when['max_n_unread']) ? 1000 : FreshRSS_Context::userConf()->mark_when['max_n_unread']; ?>
 						<input type="number" id="keep_max_n_unread" name="keep_max_n_unread" min="0" value="<?= $keep_max_n_unread ?>" data-leave-validation="<?= $keep_max_n_unread ?>" />
 					</label>
 				</div>
@@ -351,7 +351,7 @@
 				<label class="group-name" for="filteractions_read"><?= _t('conf.reading.read.when') ?></label>
 				<div class="group-controls">
 					<textarea name="filteractions_read" id="filteractions_read" class="w100"><?php
-						foreach (FreshRSS_Context::$user_conf->filtersAction('read') as $filterRead) {
+						foreach (FreshRSS_Context::userConf()->filtersAction('read') as $filterRead) {
 							echo $filterRead->getRawInput(), PHP_EOL;
 						}
 					?></textarea>
@@ -366,8 +366,8 @@
 				<div class="group-controls">
 					<label class="checkbox" for="lazyload">
 						<input type="checkbox" name="lazyload" id="lazyload" value="1"<?=
-							FreshRSS_Context::$user_conf->lazyload ? ' checked="checked"' : '' ?>
-							data-leave-validation="<?= FreshRSS_Context::$user_conf->lazyload ?>"/>
+							FreshRSS_Context::userConf()->lazyload ? ' checked="checked"' : '' ?>
+							data-leave-validation="<?= FreshRSS_Context::userConf()->lazyload ?>"/>
 						<?= _t('conf.reading.img_with_lazyload') ?>
 						<noscript> — <strong><?= _t('gen.js.should_be_activated') ?></strong></noscript>
 					</label>
diff --git a/app/views/configure/shortcut.phtml b/app/views/configure/shortcut.phtml
index e578938cd..0d7ee4cb7 100644
--- a/app/views/configure/shortcut.phtml
+++ b/app/views/configure/shortcut.phtml
@@ -16,7 +16,7 @@
 		<?php } ?>
 	</datalist>
 
-	<?php $s = FreshRSS_Context::$user_conf->shortcuts; ?>
+	<?php $s = FreshRSS_Context::userConf()->shortcuts; ?>
 
 	<?php if ([] !== $nonStandard = getNonStandardShortcuts($s)): ?>
 		<p class="alert alert-error">
diff --git a/app/views/configure/system.phtml b/app/views/configure/system.phtml
index d19698932..09d1fe188 100644
--- a/app/views/configure/system.phtml
+++ b/app/views/configure/system.phtml
@@ -16,16 +16,16 @@
 		<div class="form-group">
 			<label class="group-name" for="instance-name"><?= _t('admin.system.instance-name') ?></label>
 			<div class="group-controls">
-				<input type="text" id="instance-name" name="instance-name" value="<?= FreshRSS_Context::$system_conf->title ?>"
-					data-leave-validation="<?= FreshRSS_Context::$system_conf->title ?>"/>
+				<input type="text" id="instance-name" name="instance-name" value="<?= FreshRSS_Context::systemConf()->title ?>"
+					data-leave-validation="<?= FreshRSS_Context::systemConf()->title ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="base-url"><?= _t('admin.system.base-url') ?></label>
 			<div class="group-controls">
-				<input type="text" id="base-url" name="base-url" value="<?= FreshRSS_Context::$system_conf->base_url ?>"
-					data-leave-validation="<?= FreshRSS_Context::$system_conf->base_url ?>" disabled="disabled" />
+				<input type="text" id="base-url" name="base-url" value="<?= FreshRSS_Context::systemConf()->base_url ?>"
+					data-leave-validation="<?= FreshRSS_Context::systemConf()->base_url ?>" disabled="disabled" />
 					<p class="help"><?= _i('help') ?> <?= _t('admin.system.base-url.recommendation', dirname(Minz_Request::guessBaseUrl())) ?></p>
 					<p class="help"><?= _i('help') ?> <?= _t('admin.system.sensitive-parameter') ?></p>
 			</div>
@@ -35,7 +35,7 @@
 			<label class="group-name" for="websub"><?= _t('sub.feed.websub') ?></label>
 			<div class="group-controls">
 				<input type="checkbox" id="websub" name="websub" disabled="disabled" <?=
-					FreshRSS_Context::$system_conf->pubsubhubbub_enabled && Minz_Request::serverIsPublic(FreshRSS_Context::$system_conf->base_url) ? 'checked="checked"' : '' ?> />
+					FreshRSS_Context::systemConf()->pubsubhubbub_enabled && Minz_Request::serverIsPublic(FreshRSS_Context::systemConf()->base_url) ? 'checked="checked"' : '' ?> />
 					<p class="help"><?= _i('help') ?> <?= _t('admin.system.websub.help') ?></p>
 					<p class="help"><?= _i('help') ?> <?= _t('admin.system.sensitive-parameter') ?></p>
 			</div>
@@ -44,32 +44,32 @@
 		<div class="form-group">
 			<label class="group-name" for="auto-update-url"><?= _t('admin.system.auto-update-url') ?></label>
 			<div class="group-controls">
-				<input type="text" id="auto-update-url" name="auto-update-url" value="<?= FreshRSS_Context::$system_conf->auto_update_url ?>"
-					data-leave-validation="<?= FreshRSS_Context::$system_conf->auto_update_url ?>"/>
+				<input type="text" id="auto-update-url" name="auto-update-url" value="<?= FreshRSS_Context::systemConf()->auto_update_url ?>"
+					data-leave-validation="<?= FreshRSS_Context::systemConf()->auto_update_url ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="max-feeds"><?= _t('admin.system.max-feeds') ?></label>
 			<div class="group-controls">
-				<input type="number" id="max-feeds" name="max-feeds" value="<?= FreshRSS_Context::$system_conf->limits['max_feeds'] ?>" min="1"
-					data-leave-validation="<?= FreshRSS_Context::$system_conf->limits['max_feeds'] ?>"/>
+				<input type="number" id="max-feeds" name="max-feeds" value="<?= FreshRSS_Context::systemConf()->limits['max_feeds'] ?>" min="1"
+					data-leave-validation="<?= FreshRSS_Context::systemConf()->limits['max_feeds'] ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="max-categories"><?= _t('admin.system.max-categories') ?></label>
 			<div class="group-controls">
-				<input type="number" id="max-categories" name="max-categories" value="<?= FreshRSS_Context::$system_conf->limits['max_categories'] ?>" min="1"
-					data-leave-validation="<?= FreshRSS_Context::$system_conf->limits['max_categories'] ?>"/>
+				<input type="number" id="max-categories" name="max-categories" value="<?= FreshRSS_Context::systemConf()->limits['max_categories'] ?>" min="1"
+					data-leave-validation="<?= FreshRSS_Context::systemConf()->limits['max_categories'] ?>"/>
 			</div>
 		</div>
 
 		<div class="form-group">
 			<label class="group-name" for="cookie-duration"><?= _t('admin.system.cookie-duration.number') ?></label>
 			<div class="group-controls">
-				<input type="number" id="cookie-duration" name="cookie-duration" value="<?= FreshRSS_Context::$system_conf->limits['cookie_duration'] ?>" min="0"
-					data-leave-validation="<?= FreshRSS_Context::$system_conf->limits['cookie_duration'] ?>"/>
+				<input type="number" id="cookie-duration" name="cookie-duration" value="<?= FreshRSS_Context::systemConf()->limits['cookie_duration'] ?>" min="0"
+					data-leave-validation="<?= FreshRSS_Context::systemConf()->limits['cookie_duration'] ?>"/>
 				<p class="help"><?= _i('help') ?> <?= _t('admin.system.cookie-duration.help') ?></p>
 			</div>
 		</div>
@@ -80,9 +80,9 @@
 			<label class="group-name" for="max-registrations-select"><?= _t('admin.system.registration.select.label') ?></label>
 			<div class="group-controls">
 				<select class="select-input-changer" name="" data-name="max-registrations">
-					<option value="1" <?= FreshRSS_Context::$system_conf->limits['max_registrations'] == 1 ? 'selected = "selected"' : ''; ?> data-input-visible="false"><?= _t('admin.system.registration.select.option.noform') ?></option>
-					<option value="0" <?= FreshRSS_Context::$system_conf->limits['max_registrations'] == 0 ? 'selected = "selected"' : ''; ?> data-input-visible="false"><?= _t('admin.system.registration.select.option.nolimit') ?></option>
-					<option value="2" <?= FreshRSS_Context::$system_conf->limits['max_registrations'] > 1 ? 'selected = "selected"' : ''; ?> data-input-visible="true"><?= _t('admin.system.registration.select.option.setaccountsnumber') ?></option>
+					<option value="1" <?= FreshRSS_Context::systemConf()->limits['max_registrations'] == 1 ? 'selected = "selected"' : ''; ?> data-input-visible="false"><?= _t('admin.system.registration.select.option.noform') ?></option>
+					<option value="0" <?= FreshRSS_Context::systemConf()->limits['max_registrations'] == 0 ? 'selected = "selected"' : ''; ?> data-input-visible="false"><?= _t('admin.system.registration.select.option.nolimit') ?></option>
+					<option value="2" <?= FreshRSS_Context::systemConf()->limits['max_registrations'] > 1 ? 'selected = "selected"' : ''; ?> data-input-visible="true"><?= _t('admin.system.registration.select.option.setaccountsnumber') ?></option>
 				</select>
 			</div>
 		</div>
@@ -91,8 +91,8 @@
 			<label class="group-name" for="max-registrations-input"><?= _t('admin.system.registration.number') ?></label>
 			<div class="group-controls">
 				<?php $number = count(listUsers()); ?>
-				<input type="number" id="max-registrations-input" name="" value="<?= FreshRSS_Context::$system_conf->limits['max_registrations'] > 1 ? FreshRSS_Context::$system_conf->limits['max_registrations'] : $number + 1; ?>" min="2"
-					data-leave-validation="<?= FreshRSS_Context::$system_conf->limits['max_registrations'] > 1 ? FreshRSS_Context::$system_conf->limits['max_registrations'] : $number + 1; ?>" data-number="<?= $number ?>"/>
+				<input type="number" id="max-registrations-input" name="" value="<?= FreshRSS_Context::systemConf()->limits['max_registrations'] > 1 ? FreshRSS_Context::systemConf()->limits['max_registrations'] : $number + 1; ?>" min="2"
+					data-leave-validation="<?= FreshRSS_Context::systemConf()->limits['max_registrations'] > 1 ? FreshRSS_Context::systemConf()->limits['max_registrations'] : $number + 1; ?>" data-number="<?= $number ?>"/>
 				<span id="max-registrations-status-disabled">(= <?= _t('admin.system.registration.status.disabled') ?>)</span><span id="max-registrations-status-enabled">(= <?= _t('admin.system.registration.status.enabled') ?>)</span>
 			</div>
 		</div>
@@ -124,8 +124,8 @@
 						name="force-email-validation"
 						id="force-email-validation"
 						value="1"
-						<?= FreshRSS_Context::$system_conf->force_email_validation ? 'checked="checked"' : '' ?>
-						data-leave-validation="<?= FreshRSS_Context::$system_conf->force_email_validation ?>"
+						<?= FreshRSS_Context::systemConf()->force_email_validation ? 'checked="checked"' : '' ?>
+						data-leave-validation="<?= FreshRSS_Context::systemConf()->force_email_validation ?>"
 					/>
 					<?= _t('admin.system.force_email_validation') ?>
 				</label>