Android rendering v2

Tons of refactoring. I'm about 80% of the way to being screen size independent. Yay!

@oalami Please review.

- Removed an oddly-packaged test (per last PR comment)
- Removed multi-touch to match iPad & web, and reduce total code
- Added lots of inline comments
- Renamed lots of stuff to improve consistency
- Placement of objects now makes sense (versus based on hacks)
- Response to dragging now makes sense (versus based on hacks)
- Moved all of the context dependent code from OfficeThing into OfficeThingRenderUtil
- Removed small screen layout, that didn't work anyway
- Disabled the glowy effect for now, since it was tangled up in some bugs