* Implement server changes for group messaging
* Majority of client-side implementation
* Some server updates
* Added new React multiselect component
* Fix style issues
* Add custom renderer for options
* Fix model test
* Update ENTER functionality for multiselect control
* Remove buttons from multiselect UI control
* Updating group messaging UI (#5524)
* Move filter controls up a component level
* Scroll with arrow keys
* Updating mobile layout for multiselect (#5534)
* Fix race condition when backspacing quickly
* Hidden or new GMs show up for regular messages
* Add overriding of number remaining text
* Add UI filtering for team if config setting set
* Add icon to channel switcher and class prop to status icon
* Minor updates per feedback
* Improving group messaging UI (#5563)
* UX changes per feedback
* Update email for group messages
* UI fixes for group messaging (#5587)
* Fix missing localization string
* Add maximum users message when adding members to GM
* Fix input clearing on Android
* Updating group messaging UI (#5603)
* Updating UI for group messaging (#5604)
Log a warning to the logs, but don't show an error to the user in the
WebUI, just an empty set of query results, when the fulltext search
query they enter generates a syntax error from the database.
* PLT-3193 Add channel notification preferences for push and email notifications
* unit tests, model validation and localization
* Feedback review
* Adding back allowFromCache check
* Setting push and email to use default settings
* Move props as constants
* address feedback
* Adding go vet to the api package
* Adding go vet to app package
* Adding go vet to manualtesting package
* Adding go vet to the model package
* Adding go vet to the store dir
* Adding go vet to utils package
* Adding missing dirs with go files
* Fixing up makefile
* Fixing up makefile
* Removing root dir
* Implement GET /channels/{channel_id}/members
* Implement GET /channels/{channel_id}/members/{user_id} endpoint for APIv4
* Implement /users/{user_id}/teams/{team_id}/channels/members endpoint for APIv4
* Fix unit test
* Implement GET /teams/{team_id} endpoint for APIv4
* Implement GET /users/{user_id}/teams endpoint for APIv4
* Implement GET /teams/{team_id}/members/{user_id} endpoint for APIv4
* Added separate post types for system_join_leave and system_add_remove posts
* Added username prop to channel deleted posts
* Changed slack import to properly generate the new join/leave messages
* Added username prop to channel update posts
* Moved Post(AddTo/RemoveFrom)ChanneMessage into app package
This fixes the issue where the channel fails to Import from Slack if
there is already a channel with the same name on Mattermost that has
been deleted.
* Refactor and move session logic into app package
* Refactor email functions into the app package
* Refactor password update into app package
* Migrate user functions to app package
* Move team functions into app package
* Migrate channel functions into app package
* Pass SiteURL through to app functions
* Update based on feedback
* Removed index on Teams.Description column
* Fixed RemoveIndexIfExists when running with MySQL
* Fixed RemoveIndexIfExists when running Postgres and added unit tests
