* backend/api: refactor PlaylistId to PlaylistUid
* Add org_id to Get and Update playlist functions
Fix migration - no longer pad the uid; fix mysql syntax
The relevant tests are passing using postgres, mysql and the default sqllite backends, but there are a number of other failing tests when using postgres and myself so I'm not entirely confident with those results.
* fix bad query in GetPlaylistItem and add a test that would have caught the mistake in the first place. Reverted the playlist_uid column addition in playlist_item; it became unnecessary after this PR.
Added default value to the new UID column based on PR feedback.
* break this PRs migration into its own function
* Playlists: Update UI to use the updated API
Co-authored-by: Sofia Papagiannaki <1632407+papagian@users.noreply.github.com>
* WIP: add delete functionality to playlist
* fixes deleted item to be removed instantly without manual refresh
* update confirmModal to reference playlist name
* refactor confirmModal message to be clear enough
* WIP: some unit tests for the playlistPage
* added more tests and did some cleanup
* some code refactoring
* adds ability for user roles to control playlist delete
* some abstraction to cleanup code
* modified alert message for delete button to correspond with action
* tried a better approach to modify the alert message
* fixes playlist lookup on each render
* update handlers to not use anonymous function
* exposed getBackendSrv().get api to fetch all playlist
* used better naming convention
* removes unecessary async/await construct
* some code refactoring
* used the correct param structure
