Updated the sketch widget. There is now a move method that translates the sketch, and drawing shapes works differently internally. Added an animationTest page, though it's practically empty right now. Updated sketchTests to work with new sketch widget.
review changes

removed unused scripts from animationTests and cleaned up some of the formatting of the widget-slider
Updated animation tests
Removed text property from widget-button. Now text is part of the DOM only.
The move method in widget-sketch no longer rebinds data.
Added more animation tests.
Added more animation tests.