Fix typo for Nextcloud login

[FIX] user status on sidenav

[FIX] Dynamic CSS script isn't working on older browsers

[NEW] Add option to login via REST using Facebook and Twitter tokens

[NEW] Add REST endpoint to get the list of custom emojis

[NEW] GDPR Right to be forgotten/erased

[NEW] Added endpoint to retrieve mentions of a channel

[FIX] Extended view mode on sidebar

[FIX] Cannot answer to a livechat as a manager if agent has not answered yet

[NEW] Add leave public channel & leave private channel permissions

closes #10147

added count, total, and offset fields in response object

[NEW] Added GET/POST channels.notifications

[BREAK] Removed Private History Route

[FIX] User status missing on user info

[FIX] Name of files in file upload list cuts down at bottom due to overflow

[FIX] No pattern for user's status text capitalization

[FIX] Apostrophe-containing URL misparsed

[FIX] Popover divs don't scroll if they overflow the viewport

[NEW] Reply preview

[FIX] Reactions not working on mobile

[NEW] Support for agent's phone field

[FIX] Broken video call accept dialog

[FIX] Wrong switch button border color

Merge remote-tracking branch 'origin/feature/rest-api-mentions-of-channel' into feature/rest-api-mentions-of-channel

added pagination to channels.getAllUserMentionsByChannel endpoint.