Use static Android resource loading everywhere

[walles]

This change replaces dynamic resource loading with static in all places I could find.

There are two points with this:

1. It makes it obvious at compile time if a resource is missing.
2. It makes it obvious to Android Lint which resources are actually unused and can be removed.

The Bank constructor now takes a logo ID parameter, and all banks supply it.

Logos have been moved into bankdroid-legacy, since that's the only place they are used from.

[goober]

Thanks for all your quality improvement work. It is much needed. And thanks @robho for your quick response.