Switched to RequestAnimationFrame to improve Chrome performance.

Split out TouchScroll Behaviour into separate ts.
Merge remote-tracking branch 'origin/master'

Conflicts:
	TronGridJs/app.css
	TronGridJs/app.js
	TronGridJs/app.js.map
	TronGridJs/app.ts
	TronGridJs/trongrid.js
	TronGridJs/trongrid.js.map
	TronGridJs/trongrid.ts