removed use of greenrobot event bus.
encapsulate the drone reference in the DroidPlannerApp class.
added mavlink_version field to the HearBeat class.
Merge pull request #849 from DroidPlanner/fix_event_bus_issue

Fix the issue preventing Core from running as a java project.
Fixed Spelling. Fixed Comment.
fixed spelling
updating the status bar notification code structure.
Change to guided when follow me enabled, loiter when disabled
cleaned up languages a bit
Speak "Following" when follow me is started
Merge pull request #850 from squilter/issue_848

Issue 848
added inbox style notification.
committing missing resource files.
added notification actions to toggle drone connection.
Merge branch 'master' of https://github.com/DroidPlanner/droidplanner into feature_notification_update

Conflicts:
	Android/src/org/droidplanner/android/utils/DroidplannerPrefs.java
Merge pull request #851 from DroidPlanner/feature_notification_update

Status bar notification update
fixes issue #852 by making sure the map is initialized before any interaction with it.
Merge pull request #853 from ne0fhyk/fix_issue_852

Fixes issue #852
updated the android support library.
switched from the system NotificationManager to the compatibility library NotificationManagerCompat. The latter one provides support for android wear.
updated google play library.
Merge pull request #855 from ne0fhyk/feature_library_update

Project libraries update
added logic to automatically dismiss the notification once disconnected.