Resolve Lint warning about missing drawable-mdpi
Resolve issue of sample activity getting out of sync after rotation

Also removes unused libs/*.jar dependencies
Resolve race condition where state might get lost during Config change

There's a scenario where setting the state before `onAttachedToWindow()`
and then changing the state back after `onAttachedToWindow()` allows
both states to be set to `View.GONE`.
Undo move of setState() in setViewState()
Merge pull request #6 from jhansche/master

Resolve issue of delayed-hide causing both state views to be hidden