Replace glitch-soc's collapsed toots with upstream's “Read more” (#2916)

* Remove glitch-soc's post collapse feature

* Get rid of the infamous `parseClick`

* Remove unused CSS

* Use upstream's “Read More” implementation

* Update translation strings

app/javascript/flavours/glitch/locales/en.json

@@ -47,7 +47,6 @@
   "home.settings": "Column settings",
   "keyboard_shortcuts.bookmark": "to bookmark",
   "keyboard_shortcuts.secondary_toot": "to send toot using secondary privacy setting",
-  "keyboard_shortcuts.toggle_collapse": "to collapse/uncollapse toots",
   "moved_to_warning": "This account is marked as moved to {moved_to_link}, and may thus not accept new follows.",
   "navigation_bar.app_settings": "App settings",
   "navigation_bar.keyboard_shortcuts": "Keyboard shortcuts",
@@ -61,16 +60,7 @@
   "notifications.marked_clear": "Clear selected notifications",
   "notifications.marked_clear_confirmation": "Are you sure you want to permanently clear all selected notifications?",
   "settings.always_show_spoilers_field": "Always enable the Content Warning field",
-  "settings.auto_collapse": "Automatic collapsing",
-  "settings.auto_collapse_all": "Everything",
-  "settings.auto_collapse_height": "Height (in pixels) for a toot to be considered lengthy",
-  "settings.auto_collapse_lengthy": "Lengthy toots",
-  "settings.auto_collapse_media": "Toots with media",
-  "settings.auto_collapse_notifications": "Notifications",
-  "settings.auto_collapse_reblogs": "Boosts",
-  "settings.auto_collapse_replies": "Replies",
   "settings.close": "Close",
-  "settings.collapsed_statuses": "Collapsed toots",
   "settings.compose_box_opts": "Compose box",
   "settings.confirm_before_clearing_draft": "Show confirmation dialog before overwriting the message being composed",
   "settings.confirm_boost_missing_media_description": "Show confirmation dialog before boosting toots lacking media descriptions",
@@ -84,8 +74,6 @@
   "settings.content_warnings_shared_state_hint": "Reproduce upstream Mastodon behavior by having the Content Warning button affect all copies of a post at once. This will prevent automatic collapsing of any copy of a toot with unfolded CW",
   "settings.content_warnings_unfold_opts": "Auto-unfolding options",
   "settings.deprecated_setting": "This setting is now controlled from Mastodon's {settings_page_link}",
-  "settings.enable_collapsed": "Enable collapsed toots",
-  "settings.enable_collapsed_hint": "Collapsed posts have parts of their contents hidden to take up less screen space. This is distinct from the Content Warning feature",
   "settings.enable_content_warnings_auto_unfold": "Automatically unfold content-warnings",
   "settings.general": "General",
   "settings.hicolor_privacy_icons": "High color privacy icons",
@@ -115,7 +103,6 @@
   "settings.rewrite_mentions_no": "Do not rewrite mentions",
   "settings.rewrite_mentions_username": "Rewrite with username",
   "settings.shared_settings_link": "user preferences",
-  "settings.show_action_bar": "Show action buttons in collapsed toots",
   "settings.show_content_type_choice": "Show content-type choice when authoring toots",
   "settings.show_published_toast": "Display toast when publishing/saving a post",
   "settings.show_reply_counter": "Display an estimate of the reply count",
@@ -136,7 +123,6 @@
   "settings.tag_misleading_links.hint": "Add a visual indication with the link target host to every link not mentioning it explicitly",
   "settings.wide_view": "Wide view (Desktop mode only)",
   "settings.wide_view_hint": "Stretches columns to better fill the available space.",
-  "status.collapse": "Collapse",
   "status.filtered": "Filtered",
   "status.has_audio": "Features attached audio files",
   "status.has_pictures": "Features attached pictures",
@@ -146,6 +132,5 @@
   "status.in_reply_to": "This toot is a reply",
   "status.is_poll": "This toot is a poll",
   "status.local_only": "Only visible from your instance",
-  "status.show_filter_reason": "Show anyway",
-  "status.uncollapse": "Uncollapse"
+  "status.show_filter_reason": "Show anyway"
 }