adding intellij project file for whole droidplanner directory
BT2: Some further BT tweaks ...
Merge branch 'master' of https://github.com/arthurbenemann/droidplanner
BT2: playing part 2
fixed issue #434
tidied up the preference screen: had the categories switched to preference screens.
Merge pull request #435 from ne0fhyk/fix_map_screen_crash_on_rotation_while_connected

Fix map screen crash on rotation while connected
Preferences: Moved the USB connection type preference to the main screen
Formatting: Automatic formatting of the preferences file
Merge pull request #437 from arthurbenemann/pref

Preference screen ui update
Merge pull request #438 from Paku-/BT2

BT2: BT connectivity works ...
Merge branch 'master' into events
Drone: Changing the Event broadcast method to include the drone which generated the event