Was asked to look at this thing again; only reviewed the JS portion. Last I checked, the CSS was similarly reality-challenged. Graphics are nice, but are tantamount to the paint job on a used car. Under the hood, this thing is all junk. It's hard to imagine the innards of any Web or mobile device-based application would end up like this, which raises the question of whether the authors have ever written such applications (or any amount of meaningful JS).
/**
* @class Ext
* @singleton
There (still) are no "classes" or "singletons" in JS (starting off on the wrong foot by mangling JS terms).