* add post' root ID to apiv4 addChannelMember to render added user (as system post) at RHS
* add check to post_root_id parameter
* add AddChannelMemberWithRootId function for backward compatibility
* Return viewed at times in view channel API response
* Updated transaction to read and write once
* Remove transaction and only update if new value greater than older
* PLT-7206: UI changes. Removed last user in channel loophole, refactored code to clean it up, added differentiated support for public and private channels, added unit tests. Still need to implement server-side checks
* PLT-7206: All helper methods in channel_utils.jsx now accept the same three boolean variables in the same order and use the same boolean logic to check their values.
* PLT-7206: Added unit tests for showManagementOptions(...)
* PLT-7206: Fixed test case descriptions
* Added unit tests for showCreateOption(...)
* PLT-7206: Added unit tests for canManageMembers(...)
* PLT-7206: Removed last person in channel loophole from server-side code
* PLT-7206: Reverted config.json
* PLT-7206: Fixed double negatives in unit test names
* PLT-7206: PR feedback - Removed confusing comment and unused variable
* Revert "PLT-5765 Passed SiteURL to SendNotifications (#5705)"
This reverts commit a8e68bd890.
* Removed automatic configuration of SiteURL
* Reverted unintentional config changes
* Updated help text
* Added link to docs in Site URL warning
* Fixed merge conflict
* 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)
* Implement POST /channels/members/{user_id}/view endpoint for APIv4
* Implement PUT /channels/{channel_id}/members/{user_id}/roles endpoint for APIv4
* Implement DELETE /channels/{channel_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
* 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
* Add app package and move logic over from api package
* Change app package functions to return errors
* Move non-api tests into app package
* Fix merge
* fix API Get channels for a user returns users' dm channels with blank team ID
add check in the context.go
add suggestion
made adjustment per review and support from @joram
* update tests
* add check if needd user or admin permissions
* update per review
* PLT-4167 Team Sidebar
* Address feedback from PM
* change route from my_members to members
* bug fixes
* Updating styles for teams sidebar (#4681)
* Added PM changes
* Fix corner cases
* Addressing feedback
* use two different endpoints
* Bug fixes
* Rename model and client functions, using preferences to store last team and channel viewed
* Fix mobile notification count and closing the team sidebar
* unit test, fixed bad merge and retrieve from cached when available
* bug fixes
* use id for last channel in preferences, query optimization
* Updating multi team css (#4830)
* Add more channel paging API
* Add channel paging support to client
* Add DB channel search functions
* Add API for searching more channels
* Add more channel search functionality to client
* Add API for autocompleting channels
* Add channel autocomplete functionality to the client
* Move to be deprecated APIs to their own file
* Final clean-up
* Fixes related to feedback
* Localization changes
* Add unit as suffix to timeout constants
* PLT-4429 disabling explicit mentions when channel has more than 1k users
* Fixing test case
* Adding setting to the admin console
* Fixing bad translation
