Changes playlist structure to use only 1 list and a pointer to the current position. Implemented functions #current #next #previous
Adds add and remove functionality to the playlist service. Cleans up some comments for the old code
Rewrites some test descriptions for better readability
Renames PlayListService to PlaylistService and puts in lowercase all uses of playList
Removes functionality from the Player controller that will not be used in this first iteration. Updates the tests for this controllrer.
Injects the scope to the playlist service
Revert "Injects the scope to the playlist service"

This reverts commit b796c25d40dde5ded0f512ad39e020071544b3d3.
Creates a function on the player controller to refer to the current video
Updates the template where the player and the playlist are to reflect the changes on the player controller and the playlist service
Merge branch 'playList'