Loading logic, not yet tested
Loading functionality theoretically working
Fixed "play" button jumping
removed cheat + loading now working nicely
Fade background
Feedback now hiding after draw again
Play single sound
Merge branch 'master' of https://github.com/tonistiigi/drawmusic
Merge branch 'master' of https://github.com/tonistiigi/drawmusic

Conflicts:
	public/index.html
Merge branch 'master' of https://github.com/tonistiigi/drawmusic
added loading gif
Fixed header background transparency
Merge branch 'master' of https://github.com/tonistiigi/drawmusic
Added xylophone sound effect on layer completion