Sherlock action bar!

Now our minSdk version is 8, which means we cover 98% of Android phones!

http://developer.android.com/about/dashboards/index.html

Behavior should be identical to before. I tested on emulator running API 8, and it seems to work, but the camera intent always crashes. The reason does not seem to be attributable to our code, but some OpenGL issue with the emulator. So I think on real phones it should work.