Box'n'Jump V0.3

-Bunch of Tweaks to allow for more user error, jumps are less tight. 
-Full keyboard and controller support for UI (well except for the start screen). 
-Changed BG Music
-3 new levels, Pyramid, Tower, Bridge
-Fall distance restarts level now (only applies to lvl 11 tho)
-simplified all the scenemanagement code. It's all a lot more scalable now, much less annoying to make it load the right level. Same with restarts.