Runtime profiling overhaul.

The runtime stats are now stored to SharedPreferences, so there's more
of a chance the user will share them.  Also added the stats from
Interpersonal and LangID to the feedback email.  Added application
version to the email too.
Menu items in action bar

Testing out action bar in Personal Activity.  Tried an alternative
string tokenizer instead of String.split but didn't see improvement.
May need more profiling.
Use action bar

Activities use ActionBarSherlock now and each activity has its own help
display.  Getting ready to have a refresh button for PersonalActivity.
Deleted some dead files.  Moved to local images for consistency.  The
project might not compile anymore cause of ActionBarSherlock; I'll redo
the Github setup at some point to fix that.