[WIP] Starting implementation of better support for old versions.

Compatibility for older versions of android. Currently a work in progress and not finished.

Still missing:

[ ] Use ActionBarSherlock in detail views and webviews
[ ] Use Fix bug where app crashes on old versions (API Level 8 at least) with messages about missing drawables.
[ ] Re-add search-functionality
[ ] Re-add click-to-open-drawer