EVToolbox: User interface redesign.

<Main>
 * New ViewPager, with nested tabs for categories
 * Removed a lot of dead/unused code.
 * Removed updater, moved it to its own app dude to issues with writing to
   the sdcard with a system userid. ( needed for other settings )

Change-Id: I4dfac13f10a17030605ca12a83b704fe5c139d58