Fixed issue with two scroll bars appearing.
Additional fixes for double scrollbars of modals.
Longer modals are now scrollable.
Integrated nanoscroller.
Shifted nanoscroller to vendor.
Fixed the background for spectate view
Merge branch 'doubleScrollbars' of git://github.com/adi2412/codecombat
Got rid of the css of antiscroll in favor of nanoscroller.
Merge branch 'master' of https://github.com/codecombat/codecombat