bigger maze map, benches added manually(group prefab)

also added a normal looking tree for the intro level, added the trigger
point control pictures and made a level layout prefab. Do not remove the
simple prefab - will need it for the normal looking part of the intro
scene
bla bla -Merge remote-tracking branch 'origin/master'

things that weren't here before, and then were added and should be there
regardless - 'effin' program...

Conflicts:
	Assets/Scenes/MazeLevel.unity