Implement Web scraping "HTML + XPath" (#4220)

* More PHP type hints for Fever
Follow-up of https://github.com/FreshRSS/FreshRSS/pull/4201
Related to https://github.com/FreshRSS/FreshRSS/issues/4200

* Detail

* Draft

* Progress

* More draft

* Fix thumbnail PHP type hint
https://github.com/FreshRSS/FreshRSS/issues/4215

* More types

* A bit more

* Refactor FreshRSS_Entry::fromArray

* Progress

* Starts to work

* Categories

* Fonctional

* Layout update

* Fix relative URLs

* Cache system

* Forgotten files

* Remove a debug line

* Automatic form validation of XPath expressions

* data-leave-validation

* Fix reload action

* Simpler examples

* Fix column type for PostgreSQL

* Enforce HTTP encoding

* Readme

* Fix get full content

* target="_blank"

* gitignore

* htmlspecialchars_utf8

* Implement HTML <base>
And fix/revert `xml:base` support in SimplePie https://github.com/simplepie/simplepie/commit/e49c578817aa504d8d05cd7f33857aeda9d41908

* SimplePie upstream PR merged
https://github.com/simplepie/simplepie/pull/723

22 files changed, 793 insertions, 19 deletions

diff --git a/app/i18n/cz/sub.php b/app/i18n/cz/sub.php
index 8b896586d..2eff49030 100644
--- a/app/i18n/cz/sub.php
+++ b/app/i18n/cz/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informace',
 		'keep_min' => 'Minimální počet článků pro ponechání',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Vymazat mezipaměť',
 			'clear_cache_help' => 'Vymazat mezipaměť pro tento kanál.',
diff --git a/app/i18n/de/sub.php b/app/i18n/de/sub.php
index 2b52b59ee..52323221d 100644
--- a/app/i18n/de/sub.php
+++ b/app/i18n/de/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Information',	// IGNORE
 		'keep_min' => 'Minimale Anzahl an Artikeln, die behalten wird',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Zwischenspeicher leeren',
 			'clear_cache_help' => 'Zwischenspeicher für diesen Feed leeren.',
diff --git a/app/i18n/en-us/sub.php b/app/i18n/en-us/sub.php
index fc1c8358e..41b8c377b 100644
--- a/app/i18n/en-us/sub.php
+++ b/app/i18n/en-us/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Information',	// IGNORE
 		'keep_min' => 'Minimum number of articles to keep',	// IGNORE
+		'kind' => array(
+			'_' => 'Type of feed source',	// IGNORE
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// IGNORE
+				'feed_title' => array(
+					'_' => 'feed title',	// IGNORE
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// IGNORE
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// IGNORE
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// IGNORE
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// IGNORE
+				),
+				'item_author' => array(
+					'_' => 'item author',	// IGNORE
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// IGNORE
+				),
+				'item_categories' => 'items tags',	// IGNORE
+				'item_content' => array(
+					'_' => 'item content',	// IGNORE
+					'help' => 'Example to take the full item: <code>.</code>',	// IGNORE
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// IGNORE
+					'help' => 'Example: <code>descendant::img/@src</code>',	// IGNORE
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// IGNORE
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// IGNORE
+				),
+				'item_title' => array(
+					'_' => 'item title',	// IGNORE
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// IGNORE
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// IGNORE
+					'help' => 'Example: <code>descendant::a/@href</code>',	// IGNORE
+				),
+				'relative' => 'XPath (relative to item) for:',	// IGNORE
+				'xpath' => 'XPath for:',	// IGNORE
+			),
+			'rss' => 'RSS / Atom (default)',	// IGNORE
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Clear cache',	// IGNORE
 			'clear_cache_help' => 'Clear the cache for this feed.',	// IGNORE
diff --git a/app/i18n/en/sub.php b/app/i18n/en/sub.php
index 2548916cf..902deb1b5 100644
--- a/app/i18n/en/sub.php
+++ b/app/i18n/en/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Information',
 		'keep_min' => 'Minimum number of articles to keep',
+		'kind' => array(
+			'_' => 'Type of feed source',
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',
+				'feed_title' => array(
+					'_' => 'feed title',
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',
+				),
+				'item_author' => array(
+					'_' => 'item author',
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',
+				),
+				'item_categories' => 'items tags',
+				'item_content' => array(
+					'_' => 'item content',
+					'help' => 'Example to take the full item: <code>.</code>',
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',
+					'help' => 'Example: <code>descendant::img/@src</code>',
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',
+				),
+				'item_title' => array(
+					'_' => 'item title',
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',
+					'help' => 'Example: <code>descendant::a/@href</code>',
+				),
+				'relative' => 'XPath (relative to item) for:',
+				'xpath' => 'XPath for:',
+			),
+			'rss' => 'RSS / Atom (default)',
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Clear cache',
 			'clear_cache_help' => 'Clear the cache for this feed.',
diff --git a/app/i18n/es/sub.php b/app/i18n/es/sub.php
index ce29e369e..f55e0cbbb 100755
--- a/app/i18n/es/sub.php
+++ b/app/i18n/es/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Información',
 		'keep_min' => 'Número mínimo de artículos a conservar',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Borrar caché',
 			'clear_cache_help' => 'Borrar la memoria caché de esta fuente.',
diff --git a/app/i18n/fr/admin.php b/app/i18n/fr/admin.php
index 706fa984d..4a628e2fe 100644
--- a/app/i18n/fr/admin.php
+++ b/app/i18n/fr/admin.php
@@ -72,8 +72,8 @@ return array(
 		),
 		'files' => 'Installation des fichiers',
 		'json' => array(
-			'nok' => 'Vous ne disposez pas de l’extension recommendée JSON (paquet php-json).',
-			'ok' => 'Vous disposez de l’extension recommendée JSON.',
+			'nok' => 'Vous ne disposez pas de l’extension recommandée JSON (paquet php-json).',
+			'ok' => 'Vous disposez de l’extension recommandée JSON.',
 		),
 		'mbstring' => array(
 			'nok' => 'Impossible de trouver la librairie recommandée mbstring pour Unicode.',
@@ -199,7 +199,7 @@ return array(
 		'back_to_manage' => '← Revenir à la liste des utilisateurs',
 		'create' => 'Créer un nouvel utilisateur',
 		'database_size' => 'Volumétrie',
-		'email' => 'Adresse email',
+		'email' => 'adresse électronique',
 		'enabled' => 'Actif',
 		'feed_count' => 'Flux',
 		'is_admin' => 'Admin',
diff --git a/app/i18n/fr/conf.php b/app/i18n/fr/conf.php
index 4ebf7895b..8d097fa59 100644
--- a/app/i18n/fr/conf.php
+++ b/app/i18n/fr/conf.php
@@ -73,7 +73,7 @@ return array(
 			'_' => 'Suppression du compte',
 			'warn' => 'Le compte et toutes les données associées vont être supprimées.',
 		),
-		'email' => 'Adresse email',
+		'email' => 'adresse électronique',
 		'password_api' => 'Mot de passe API<br /><small>(ex. : pour applis mobiles)</small>',
 		'password_form' => 'Mot de passe<br /><small>(pour connexion par formulaire)</small>',
 		'password_format' => '7 caractères minimum',
@@ -185,7 +185,7 @@ return array(
 		'email' => 'Courriel',
 		'facebook' => 'Facebook',	// IGNORE
 		'more_information' => 'Plus d’informations',
-		'print' => 'Print',	// IGNORE
+		'print' => 'Imprimer',
 		'raindrop' => 'Raindrop.io',	// IGNORE
 		'remove' => 'Supprimer la méthode de partage',
 		'shaarli' => 'Shaarli',	// IGNORE
diff --git a/app/i18n/fr/install.php b/app/i18n/fr/install.php
index b9157ff53..d27fa6049 100644
--- a/app/i18n/fr/install.php
+++ b/app/i18n/fr/install.php
@@ -71,8 +71,8 @@ return array(
 			'ok' => 'Vous disposez de fileinfo.',
 		),
 		'json' => array(
-			'nok' => 'Vous ne disposez pas de l’extension recommendée JSON (paquet php-json).',
-			'ok' => 'Vous disposez de l’extension recommendée JSON.',
+			'nok' => 'Vous ne disposez pas de l’extension recommandée JSON (paquet php-json).',
+			'ok' => 'Vous disposez de l’extension recommandée JSON.',
 		),
 		'mbstring' => array(
 			'nok' => 'Impossible de trouver la librairie recommandée mbstring pour Unicode.',
@@ -124,7 +124,7 @@ return array(
 	'missing_applied_migrations' => 'Quelque chose s’est mal passé, vous devriez créer le fichier <em>%s</em> à la main.',
 	'ok' => 'L’installation s’est bien passée.',
 	'session' => array(
-		'nok' => 'Le serveur Web semble mal configué pour les cookies nécessaires aux sessions PHP!',
+		'nok' => 'Le serveur Web semble mal configuré pour les cookies nécessaires aux sessions PHP!',
 	),
 	'step' => 'étape %d',
 	'steps' => 'Étapes',
diff --git a/app/i18n/fr/sub.php b/app/i18n/fr/sub.php
index 710d75918..c8528504a 100644
--- a/app/i18n/fr/sub.php
+++ b/app/i18n/fr/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informations',
 		'keep_min' => 'Nombre minimum d’articles à conserver',
+		'kind' => array(
+			'_' => 'Type de source de flux',
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Moissonnage du Web)',
+				'feed_title' => array(
+					'_' => 'titre de flux',
+					'help' => 'Exemple : <code>//title</code> ou un text statique : <code>"Mon flux personnalisé"</code>',
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> est un langage de requête pour les utilisateurs avancés, supporté par FreshRSS pour le moissonnage du Web (Web scraping).',
+				'item' => array(
+					'_' => 'trouver les <strong>articles</strong>',
+					'help' => 'Exemple : <code>//div[@class="article"]</code>',
+				),
+				'item_author' => array(
+					'_' => 'auteur de l’article',
+					'help' => 'Peut aussi être une chaîne de texte statique. Exemple : <code>"Anonyme"</code>',
+				),
+				'item_categories' => 'catégories (tags) de l’article',
+				'item_content' => array(
+					'_' => 'contenu de l’article',
+					'help' => 'Exemple pour prendre l’article complet : <code>.</code>',
+				),
+				'item_thumbnail' => array(
+					'_' => 'miniature de l’article',
+					'help' => 'Exemple : <code>descendant::img/@src</code>',
+				),
+				'item_timestamp' => array(
+					'_' => 'date de l’article',
+					'help' => 'Le résultat sera passé à la fonction <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',
+				),
+				'item_title' => array(
+					'_' => 'titre de l’article',
+					'help' => 'Utiliser en particulier l’<a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">axe XPath</a> <code>descendant::</code> comme <code>descendant::h2</code>',
+				),
+				'item_uri' => array(
+					'_' => 'lien (URL) de l’article',
+					'help' => 'Exemple : <code>descendant::a/@href</code>',
+				),
+				'relative' => 'XPath (relatif à l’article) pour :',
+				'xpath' => 'XPath pour :',
+			),
+			'rss' => 'RSS / Atom (par défaut)',
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Vider le cache',
 			'clear_cache_help' => 'Supprime le cache de ce flux.',
@@ -100,7 +143,7 @@ return array(
 		'ttl' => 'Ne pas automatiquement rafraîchir plus souvent que',
 		'url' => 'URL du flux',
 		'useragent' => 'Sélectionner l’agent utilisateur pour télécharger ce flux',
-		'useragent_help' => 'Exemple: <kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',
+		'useragent_help' => 'Exemple : <kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',
 		'validator' => 'Vérifier la validité du flux',
 		'website' => 'URL du site',
 		'websub' => 'Notification instantanée par WebSub',
diff --git a/app/i18n/fr/user.php b/app/i18n/fr/user.php
index e51c2910b..dabc5fab6 100644
--- a/app/i18n/fr/user.php
+++ b/app/i18n/fr/user.php
@@ -13,28 +13,28 @@
 return array(
 	'email' => array(
 		'feedback' => array(
-			'invalid' => 'L’adresse email est invalide.',
-			'required' => 'L’adresse email est requise.',
+			'invalid' => 'L’adresse électronique est invalide.',
+			'required' => 'L’adresse électronique est requise.',
 		),
 		'validation' => array(
-			'change_email' => 'Vous pouvez changer votre adresse email <a href="%s">dans votre profil</a>.',
+			'change_email' => 'Vous pouvez changer votre adresse électronique <a href="%s">dans votre profil</a>.',
 			'email_sent_to' => 'Nous venons d’envoyer un email à <strong>%s</strong>, veuillez suivre ses indications pour valider votre adresse.',
 			'feedback' => array(
 				'email_failed' => 'Nous n’avons pas pu vous envoyer d’email à cause d’une mauvaise configuration du serveur.',
 				'email_sent' => 'Un email a été envoyé à votre adresse.',
-				'error' => 'L’adresse email n’a pas pu être validée.',
-				'ok' => 'L’adresse email a été validée.',
-				'unnecessary' => 'L’adresse email a déjà été validée.',
-				'wrong_token' => 'L’adresse email n’a pas pu être validée à cause d’un mauvais token.',
+				'error' => 'L’adresse électronique n’a pas pu être validée.',
+				'ok' => 'L’adresse électronique a été validée.',
+				'unnecessary' => 'L’adresse électronique a déjà été validée.',
+				'wrong_token' => 'L’adresse électronique n’a pas pu être validée à cause d’un mauvais token.',
 			),
-			'need_to' => 'Vous devez valider votre adresse email avant de pouvoir utiliser %s.',
+			'need_to' => 'Vous devez valider votre adresse électronique avant de pouvoir utiliser %s.',
 			'resend_email' => 'Renvoyer l’email',
-			'title' => 'Validation de l’adresse email',
+			'title' => 'Validation de l’adresse électronique',
 		),
 	),
 	'mailer' => array(
 		'email_need_validation' => array(
-			'body' => 'Vous venez de vous inscrire sur %s mais vous devez encore valider votre adresse email. Pour cela, veuillez cliquer sur ce lien :',
+			'body' => 'Vous venez de vous inscrire sur %s mais vous devez encore valider votre adresse électronique. Pour cela, veuillez cliquer sur ce lien :',
 			'title' => 'Vous devez valider votre compte',
 			'welcome' => 'Bienvenue %s,',
 		),
diff --git a/app/i18n/he/sub.php b/app/i18n/he/sub.php
index 1f4dc019f..6068a63c0 100644
--- a/app/i18n/he/sub.php
+++ b/app/i18n/he/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'מידע',
 		'keep_min' => 'מסםר מינימלי של מאמרים לשמור',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Clear cache',	// TODO
 			'clear_cache_help' => 'Clear the cache for this feed.',	// TODO
diff --git a/app/i18n/it/sub.php b/app/i18n/it/sub.php
index ac5080ffb..cab35180e 100644
--- a/app/i18n/it/sub.php
+++ b/app/i18n/it/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informazioni',
 		'keep_min' => 'Numero minimo di articoli da mantenere',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Clear cache',	// TODO
 			'clear_cache_help' => 'Clear the cache for this feed.',	// TODO
diff --git a/app/i18n/ja/sub.php b/app/i18n/ja/sub.php
index 4b68e46fd..ba7fa23b1 100644
--- a/app/i18n/ja/sub.php
+++ b/app/i18n/ja/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'インフォメーション',
 		'keep_min' => '最小数の記事は保持されます',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'キャッシュのクリア',
 			'clear_cache_help' => 'このフィードのキャッシュをクリアします。',
diff --git a/app/i18n/ko/sub.php b/app/i18n/ko/sub.php
index 27b1f8bfa..ff9af8c39 100644
--- a/app/i18n/ko/sub.php
+++ b/app/i18n/ko/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => '정보',
 		'keep_min' => '최소 유지 글 개수',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => '캐쉬 지우기',
 			'clear_cache_help' => '이 피드의 캐쉬 지우기.',
diff --git a/app/i18n/nl/sub.php b/app/i18n/nl/sub.php
index 611e97497..b8439f0b5 100644
--- a/app/i18n/nl/sub.php
+++ b/app/i18n/nl/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informatie',
 		'keep_min' => 'Minimum aantal artikelen om te houden',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Cache leegmaken',
 			'clear_cache_help' => 'Cache voor deze feed leegmaken.',
diff --git a/app/i18n/oc/sub.php b/app/i18n/oc/sub.php
index fe4b38776..5cc7c792a 100644
--- a/app/i18n/oc/sub.php
+++ b/app/i18n/oc/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informacions',
 		'keep_min' => 'Nombre minimum d’articles de servar',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Escafar lo cache',
 			'clear_cache_help' => 'Escafar lo cache d’aqueste flux sul disc',
diff --git a/app/i18n/pl/sub.php b/app/i18n/pl/sub.php
index 3c2f7b815..204d9ffef 100644
--- a/app/i18n/pl/sub.php
+++ b/app/i18n/pl/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informacja',
 		'keep_min' => 'Minimalna liczba wiadomości do do przechowywania',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Wyczyść pamięć podręczną',
 			'clear_cache_help' => 'Czyści pamięć podręczną tego kanału.',
diff --git a/app/i18n/pt-br/sub.php b/app/i18n/pt-br/sub.php
index bc512e867..25d76ad9f 100644
--- a/app/i18n/pt-br/sub.php
+++ b/app/i18n/pt-br/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informações',
 		'keep_min' => 'Número mínimo de artigos para manter',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Limpar o cache',
 			'clear_cache_help' => 'Limpar o cache em disco deste feed',
diff --git a/app/i18n/ru/sub.php b/app/i18n/ru/sub.php
index e11404674..1be761ab6 100644
--- a/app/i18n/ru/sub.php
+++ b/app/i18n/ru/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Информация',
 		'keep_min' => 'Оставлять статей не менее',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Очистить кэш',
 			'clear_cache_help' => 'Очистить кэш для этой ленты.',
diff --git a/app/i18n/sk/sub.php b/app/i18n/sk/sub.php
index 3da71a24c..ef6e037fb 100644
--- a/app/i18n/sk/sub.php
+++ b/app/i18n/sk/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Informácia',
 		'keep_min' => 'Minimálny počet článkov na uchovanie',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Vymazať vyrovnáciu pamäť',
 			'clear_cache_help' => 'Vymazať vyrovnáciu pamäť pre tento kanál.',
diff --git a/app/i18n/tr/sub.php b/app/i18n/tr/sub.php
index 4704b401c..e9f58f895 100644
--- a/app/i18n/tr/sub.php
+++ b/app/i18n/tr/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => 'Bilgi',
 		'keep_min' => 'En az tutulacak makale sayısı',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => 'Önbelleği temizle',
 			'clear_cache_help' => 'Bu akışın önbelleğini temizler.',
diff --git a/app/i18n/zh-cn/sub.php b/app/i18n/zh-cn/sub.php
index 3fcdbf5c8..d45ba91eb 100644
--- a/app/i18n/zh-cn/sub.php
+++ b/app/i18n/zh-cn/sub.php
@@ -61,6 +61,49 @@ return array(
 		),
 		'information' => '信息',
 		'keep_min' => '至少保存的文章数',
+		'kind' => array(
+			'_' => 'Type of feed source',	// TODO
+			'html_xpath' => array(
+				'_' => 'HTML + XPath (Web scraping)',	// TODO
+				'feed_title' => array(
+					'_' => 'feed title',	// TODO
+					'help' => 'Example: <code>//title</code> or a static string: <code>"My custom feed"</code>',	// TODO
+				),
+				'help' => '<dfn><a href="https://www.w3.org/TR/xpath-10/" target="_blank">XPath 1.0</a></dfn> is a standard query language for advanced users, and which FreshRSS supports to enable Web scraping.',	// TODO
+				'item' => array(
+					'_' => 'finding news <strong>items</strong><br /><small>(most important)</small>',	// TODO
+					'help' => 'Example: <code>//div[@class="news-item"]</code>',	// TODO
+				),
+				'item_author' => array(
+					'_' => 'item author',	// TODO
+					'help' => 'Can also be a static string. Example: <code>"Anonymous"</code>',	// TODO
+				),
+				'item_categories' => 'items tags',	// TODO
+				'item_content' => array(
+					'_' => 'item content',	// TODO
+					'help' => 'Example to take the full item: <code>.</code>',	// TODO
+				),
+				'item_thumbnail' => array(
+					'_' => 'item thumbnail',	// TODO
+					'help' => 'Example: <code>descendant::img/@src</code>',	// TODO
+				),
+				'item_timestamp' => array(
+					'_' => 'item date',	// TODO
+					'help' => 'The result will be parsed by <a href="https://php.net/strtotime" target="_blank"><code>strtotime()</code></a>',	// TODO
+				),
+				'item_title' => array(
+					'_' => 'item title',	// TODO
+					'help' => 'Use in particular the <a href="https://developer.mozilla.org/docs/Web/XPath/Axes" target="_blank">XPath axis</a> <code>descendant::</code> like <code>descendant::h2</code>',	// TODO
+				),
+				'item_uri' => array(
+					'_' => 'item link (URL)',	// TODO
+					'help' => 'Example: <code>descendant::a/@href</code>',	// TODO
+				),
+				'relative' => 'XPath (relative to item) for:',	// TODO
+				'xpath' => 'XPath for:',	// TODO
+			),
+			'rss' => 'RSS / Atom (default)',	// TODO
+		),
 		'maintenance' => array(
 			'clear_cache' => '清理缓存',
 			'clear_cache_help' => '清除该feed的缓存',