More WebSub doc (#5862)

* More WebSub doc

* UI for WebSub + more documentation
And spellcheck Frech

* Links to WebSub doc from readme

* Add link to WebSub doc in admin interface

* Fix checkbox

* Plural

33 files changed, 93 insertions, 11 deletions

diff --git a/app/i18n/cz/admin.php b/app/i18n/cz/admin.php
index e96e2ddf4..ad67d0b23 100644
--- a/app/i18n/cz/admin.php
+++ b/app/i18n/cz/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Aktualizace systému',
diff --git a/app/i18n/de/admin.php b/app/i18n/de/admin.php
index cf14b3f75..336e7ff02 100644
--- a/app/i18n/de/admin.php
+++ b/app/i18n/de/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">sind aktiv</a>',
 			'help' => 'So werden die <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">Nutzungsbedingungen aktiviert</a>',
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'System aktualisieren',
diff --git a/app/i18n/el/admin.php b/app/i18n/el/admin.php
index 03cf68227..edceeba9f 100644
--- a/app/i18n/el/admin.php
+++ b/app/i18n/el/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Ενημέρωση συστήματος',
diff --git a/app/i18n/el/sub.php b/app/i18n/el/sub.php
index 6b7867149..6dfc9bffa 100644
--- a/app/i18n/el/sub.php
+++ b/app/i18n/el/sub.php
@@ -169,7 +169,7 @@ return array(
 		'useragent_help' => 'Example: <kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',	// TODO
 		'validator' => 'Check the validity of the feed',	// TODO
 		'website' => 'Website URL',	// TODO
-		'websub' => 'Instant notification with WebSub',	// TODO
+		'websub' => 'Instant notifications with WebSub',	// TODO
 	),
 	'import_export' => array(
 		'export' => 'Export',	// TODO
diff --git a/app/i18n/en-us/admin.php b/app/i18n/en-us/admin.php
index 59f9a1a41..54cd42cbd 100644
--- a/app/i18n/en-us/admin.php
+++ b/app/i18n/en-us/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// IGNORE
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// IGNORE
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// IGNORE
+		),
 	),
 	'update' => array(
 		'_' => 'Update system',	// IGNORE
diff --git a/app/i18n/en-us/sub.php b/app/i18n/en-us/sub.php
index 848b929dc..496335e9b 100644
--- a/app/i18n/en-us/sub.php
+++ b/app/i18n/en-us/sub.php
@@ -169,7 +169,7 @@ return array(
 		'useragent_help' => 'Example: <kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',	// IGNORE
 		'validator' => 'Check the validity of the feed',	// IGNORE
 		'website' => 'Website URL',	// IGNORE
-		'websub' => 'Instant notification with WebSub',	// IGNORE
+		'websub' => 'Instant notifications with WebSub',	// IGNORE
 	),
 	'import_export' => array(
 		'export' => 'Export',	// IGNORE
diff --git a/app/i18n/en/admin.php b/app/i18n/en/admin.php
index 35d0d8b2a..20fa0e6c6 100644
--- a/app/i18n/en/admin.php
+++ b/app/i18n/en/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Update FreshRSS',
diff --git a/app/i18n/en/sub.php b/app/i18n/en/sub.php
index f57e91537..cb362bda7 100644
--- a/app/i18n/en/sub.php
+++ b/app/i18n/en/sub.php
@@ -169,7 +169,7 @@ return array(
 		'useragent_help' => 'Example: <kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',
 		'validator' => 'Check the validity of the feed',
 		'website' => 'Website URL',
-		'websub' => 'Instant notification with WebSub',
+		'websub' => 'Instant notifications with WebSub',
 	),
 	'import_export' => array(
 		'export' => 'Export',
diff --git a/app/i18n/es/admin.php b/app/i18n/es/admin.php
index ef88875f6..1643ed814 100644
--- a/app/i18n/es/admin.php
+++ b/app/i18n/es/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">está activado</a>',
 			'help' => 'Cómo <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">activar las Condiciones de servicio</a>',
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Actualizar sistema',
diff --git a/app/i18n/fa/admin.php b/app/i18n/fa/admin.php
index 5de49bd14..514074a6a 100644
--- a/app/i18n/fa/admin.php
+++ b/app/i18n/fa/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => ' <a href="./?a=tos">فعال است</a>',
 			'help' => ' نحوه <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">فعال کردن شرایط خدمات </a>',
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => ' FreshRSS را به روز کنید',
diff --git a/app/i18n/fr/admin.php b/app/i18n/fr/admin.php
index 898921df8..b7178b6d1 100644
--- a/app/i18n/fr/admin.php
+++ b/app/i18n/fr/admin.php
@@ -161,7 +161,7 @@ return array(
 		'auto-update-url' => 'URL du service de mise à jour',
 		'base-url' => array(
 			'_' => 'URL de la racine',
-			'recommendation' => 'Recommandation automatique: <kbd>%s</kbd>',
+			'recommendation' => 'Recommandation automatique : <kbd>%s</kbd>',
 		),
 		'cookie-duration' => array(
 			'help' => 'en secondes',
@@ -187,12 +187,15 @@ return array(
 			),
 			'title' => 'Formulaire d’inscription utilisateur',
 		),
-		'sensitive-parameter' => 'Paramètre sensible. Éditez manuallement <kbd>./data/config.php</kbd>',
+		'sensitive-parameter' => 'Paramètre sensible. Éditez manuellement <kbd>./data/config.php</kbd>',
 		'tos' => array(
 			'disabled' => 'non renseigné',
 			'enabled' => '<a href="./?a=tos">activées</a>',
 			'help' => 'Comment <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">activer les conditions d’utilisation</a>',
 		),
+		'websub' => array(
+			'help' => 'À propos de <a href="https://freshrss.github.io/FreshRSS/fr/users/08_PubSubHubbub.html" target="_blank">WebSub</a>',
+		),
 	),
 	'update' => array(
 		'_' => 'Système de mise à jour',
diff --git a/app/i18n/fr/conf.php b/app/i18n/fr/conf.php
index 00d0332c3..5556e468a 100644
--- a/app/i18n/fr/conf.php
+++ b/app/i18n/fr/conf.php
@@ -204,7 +204,7 @@ return array(
 		'read' => array(
 			'article_open_on_website' => 'lorsque l’article est ouvert sur le site d’origine',
 			'article_viewed' => 'lorsque l’article est affiché',
-			'focus' => 'lorsque l’article est selectionné (sauf pour les flux importants)',
+			'focus' => 'lorsque l’article est sélectionné (sauf pour les flux importants)',
 			'keep_max_n_unread' => 'Nombre maximum d’articles conservés non lus',
 			'scroll' => 'au défilement de la page (sauf pour les flux importants)',
 			'upon_gone' => 'lorsqu’il n’est plus dans le flux d’actualités en amont',
diff --git a/app/i18n/fr/feedback.php b/app/i18n/fr/feedback.php
index de80ec367..e24f9c280 100644
--- a/app/i18n/fr/feedback.php
+++ b/app/i18n/fr/feedback.php
@@ -61,7 +61,7 @@ return array(
 		'feeds_imported_with_errors' => 'Vos flux ont été importés mais des erreurs sont survenues.	Si vous avez fini vos importations, vous pouvez cliquer le bouton <i>Actualiser flux</i>.',
 		'file_cannot_be_uploaded' => 'Le fichier ne peut pas être téléchargé !',
 		'no_zip_extension' => 'L’extension ZIP n’est pas présente sur votre serveur.',
-		'zip_error' => 'Une erreur est survenue durant le traintement du fichier ZIP.',
+		'zip_error' => 'Une erreur est survenue durant le traitement du fichier ZIP.',
 	),
 	'profile' => array(
 		'error' => 'Votre profil n’a pas pu être mis à jour',
diff --git a/app/i18n/fr/sub.php b/app/i18n/fr/sub.php
index 9ec9ad5f7..31499d288 100644
--- a/app/i18n/fr/sub.php
+++ b/app/i18n/fr/sub.php
@@ -78,7 +78,7 @@ return 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' => 'Exemple : <code>//title</code> ou un texte 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(
@@ -169,7 +169,7 @@ return array(
 		'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',
+		'websub' => 'Notifications instantanée par WebSub',
 	),
 	'import_export' => array(
 		'export' => 'Exporter',
diff --git a/app/i18n/he/admin.php b/app/i18n/he/admin.php
index 438e8ef36..22a49e126 100644
--- a/app/i18n/he/admin.php
+++ b/app/i18n/he/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'מערכת העדכון',
diff --git a/app/i18n/he/sub.php b/app/i18n/he/sub.php
index 3c1b65b87..7e782b091 100644
--- a/app/i18n/he/sub.php
+++ b/app/i18n/he/sub.php
@@ -169,7 +169,7 @@ return array(
 		'useragent_help' => 'Example: <kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',	// TODO
 		'validator' => 'בדיקות תקינות ההזנה',
 		'website' => 'אתר URL',
-		'websub' => 'Instant notification with WebSub',	// TODO
+		'websub' => 'Instant notifications with WebSub',	// TODO
 	),
 	'import_export' => array(
 		'export' => 'ייצוא',
diff --git a/app/i18n/hu/admin.php b/app/i18n/hu/admin.php
index 25254a53e..a1c0590cf 100644
--- a/app/i18n/hu/admin.php
+++ b/app/i18n/hu/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">engedélyezve</a>',
 			'help' => 'Hogyan kapcsoljuk be a <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">Szolgáltatási feltételeket</a>',
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'FreshRSS Frissítése',
diff --git a/app/i18n/id/admin.php b/app/i18n/id/admin.php
index 6e67f3339..cb7e5c17e 100644
--- a/app/i18n/id/admin.php
+++ b/app/i18n/id/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Update system',	// DIRTY
diff --git a/app/i18n/id/sub.php b/app/i18n/id/sub.php
index bc71e086e..76bef3e53 100644
--- a/app/i18n/id/sub.php
+++ b/app/i18n/id/sub.php
@@ -169,7 +169,7 @@ return array(
 		'useragent_help' => 'Example: <kbd>Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0)</kbd>',	// TODO
 		'validator' => 'Check the validity of the feed',	// TODO
 		'website' => 'Website URL',	// TODO
-		'websub' => 'Instant notification with WebSub',	// TODO
+		'websub' => 'Instant notifications with WebSub',	// TODO
 	),
 	'import_export' => array(
 		'export' => 'Export',	// TODO
diff --git a/app/i18n/it/admin.php b/app/i18n/it/admin.php
index cd625c9a3..2d0da2e02 100644
--- a/app/i18n/it/admin.php
+++ b/app/i18n/it/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Aggiornamento sistema',
diff --git a/app/i18n/ja/admin.php b/app/i18n/ja/admin.php
index 5115a569a..98742e744 100644
--- a/app/i18n/ja/admin.php
+++ b/app/i18n/ja/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'システムアップデート',
diff --git a/app/i18n/ko/admin.php b/app/i18n/ko/admin.php
index c24294a3d..4d6dbb1db 100644
--- a/app/i18n/ko/admin.php
+++ b/app/i18n/ko/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => '업데이트',
diff --git a/app/i18n/lv/admin.php b/app/i18n/lv/admin.php
index 222d79091..91ce5a935 100644
--- a/app/i18n/lv/admin.php
+++ b/app/i18n/lv/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">ir ieslēgts</a>',
 			'help' => 'Kā iespējot <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">pakalpojumu sniegšanas noteikumus</a>',
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Atjaunināt sistēmu',
diff --git a/app/i18n/nl/admin.php b/app/i18n/nl/admin.php
index 86b3610e5..2ce4f19ad 100644
--- a/app/i18n/nl/admin.php
+++ b/app/i18n/nl/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is ingeschakeld</a>',
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">algemene voorwaarden inschakelen</a>',
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Versie controle',
diff --git a/app/i18n/oc/admin.php b/app/i18n/oc/admin.php
index f95f20689..358e8a054 100644
--- a/app/i18n/oc/admin.php
+++ b/app/i18n/oc/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Sistèma de mesa a jorn',
diff --git a/app/i18n/pl/admin.php b/app/i18n/pl/admin.php
index 9bd98e510..695e04010 100644
--- a/app/i18n/pl/admin.php
+++ b/app/i18n/pl/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Aktualizacja',
diff --git a/app/i18n/pt-br/admin.php b/app/i18n/pt-br/admin.php
index cc470b058..b4642a886 100644
--- a/app/i18n/pt-br/admin.php
+++ b/app/i18n/pt-br/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Atualização do sistema',
diff --git a/app/i18n/ru/admin.php b/app/i18n/ru/admin.php
index 6eb26b6ac..399ecf250 100644
--- a/app/i18n/ru/admin.php
+++ b/app/i18n/ru/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Обновление системы',
diff --git a/app/i18n/sk/admin.php b/app/i18n/sk/admin.php
index 9cac5e798..ca42ae032 100644
--- a/app/i18n/sk/admin.php
+++ b/app/i18n/sk/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Aktualizácia systému',
diff --git a/app/i18n/tr/admin.php b/app/i18n/tr/admin.php
index d0132035d..8b34c551e 100644
--- a/app/i18n/tr/admin.php
+++ b/app/i18n/tr/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => 'Sistem güncelleme',
diff --git a/app/i18n/zh-cn/admin.php b/app/i18n/zh-cn/admin.php
index 9160144fb..01654f358 100644
--- a/app/i18n/zh-cn/admin.php
+++ b/app/i18n/zh-cn/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => '更新系统',
diff --git a/app/i18n/zh-tw/admin.php b/app/i18n/zh-tw/admin.php
index 0db45665c..f41634927 100644
--- a/app/i18n/zh-tw/admin.php
+++ b/app/i18n/zh-tw/admin.php
@@ -193,6 +193,9 @@ return array(
 			'enabled' => '<a href="./?a=tos">is enabled</a>',	// TODO
 			'help' => 'How to <a href="https://freshrss.github.io/FreshRSS/en/admins/12_User_management.html#enable-terms-of-service-tos" target="_blank">enable the Terms of Service</a>',	// TODO
 		),
+		'websub' => array(
+			'help' => 'About <a href="https://freshrss.github.io/FreshRSS/en/users/WebSub.html" target="_blank">WebSub</a>',	// TODO
+		),
 	),
 	'update' => array(
 		'_' => '更新系統',
diff --git a/app/views/configure/system.phtml b/app/views/configure/system.phtml
index 52fd9ee87..b1522749f 100644
--- a/app/views/configure/system.phtml
+++ b/app/views/configure/system.phtml
@@ -32,6 +32,16 @@
 		</div>
 
 		<div class="form-group">
+			<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"' : '' ?> />
+					<p class="help"><?= _i('help') ?> <?= _t('admin.system.websub.help') ?></p>
+					<p class="help"><?= _i('help') ?> <?= _t('admin.system.sensitive-parameter') ?></p>
+			</div>
+		</div>
+
+		<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 ?>"