- UI_Menu level select + small extra features
 - Added campaign system to group ExerciseGroups together + function in the UI_Menu
 - Basic full game loop from Main menu to game (just no couple-back yet in this commit)
 - Full loop gameplay-menu
 - Implemented EndScreen at the end of an exercise group
 - Exercise groups are properly unlocked
 - feathers show current scores for levels in LevelSelect screen
 - Autoplay button in startmenu
 - Extra animation for newly unlocked level in Level Select when coming back from gameplay
 - User config overview in LevelSelect (Debug) + complete current level button in Gameplay (debug)
 - PreScenes are automatically loaded when choosing ExerciseGroup from the LevelSelect menu (no postscenes yet)