Core: Add Mavlink takeoff cmd
Core: Create function to make the drone takeoff
Android: Add takeoff action button back to flight screen
Android: Add arm button to main screen
Android: Add connection button to FlightActionsFragment
Android: Setup buttons on flightControl fragment accordinly to flight state
Core: Move "dronie" code to core, so it can be reused
Merge branch 'dronie' into flightState
Android: Added a dronie icon to FlightControl fragment
Android: Added "dronie" button to flight screen