Fix data loading when rotating the screen.

See http://stackoverflow.com/questions/12507617/android-loader-not-triggering-callbacks-on-screen-rotate#comment16867142_12507617
Some minor work on the action bar.
Slight redesign. Use Holo.Light instead of Holo.Light.DarkActionBar.

Includes a new custom icon for the add parcel action.
Also switches to use local icons instead of android.R.drawables.