Modify list background colors
Implement custom action bar for each activity
- Created MyActionBar class to modularize the code
- This is currently handled by using multiple menu_xxx layout files.  It'd be nice to be able to reduce that and just hide/show action bar elements as needed
Fix camera and gallery buttons
- I broke these when implementing the action bar
Merged BTLE volume hack
- Volume button increments and decrements BTLE value
- Only one user's RSSI value and view is cached