Actionbar changes for IITC Mobile

This is my first attempt at Android development so be kind.  

I've hidden the web based tabs, though apparently you can still view them by dragging down near the bottom of the screen.

Instead I've added menu buttons/items to the ActionBar of the application.

Personally I think this looks a LOT better.

NOTE: In Landscape (or on larger displays) the buttons will appear up top, possibly with an overflow menu.

I've done limited testing on the Android emulator (Galaxy Nexus) and a physical S2, S4 and Nexus 7.

![2013-05-06 23 04 19](https://f.cloud.github.com/assets/452393/466029/37b6764e-b64e-11e2-9d7a-d3bb9ff9508b.png)

If this is accepted I'll look at doing more work to perhaps add a search button with appropriate ActionView.