* 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
