Remove notes to adjust GUI buttons

The buttons are not visibility to this class so it will not work.
Functionality being added in FlightDataActivity instead.
Use ArmListener to flip ArmDisarm button state

Move button flip to notification listener so that we can adjust it when
the vehicle actually changes modes.
Comments to note this armButton is in the menu
Change text color on armed state to white

Change disarm button to have white text so it is easier to read than
having black text.
Flip menu option text so it displays right

Menu option text for arm/disarm was backwards to what it should have
been. Flipped so it will now display the option to disarm when it is
armed and arm when it is disarmed.
Fix comments for color XML file and add alpha

Added alpha component to black color and also fixed comments as we are
not testing now.
Set text color to use alpha and flip on state

Set white text on arm, set black text on dismarm. Add alpha component to
colors.