Fix #800 (and add error msg in a nasty catch and ignore)
integration of google analytics within droidplanner.
fixed issues preventing google analytics from dispatching recorded hits.
cleaned up the styles resource file.
added preference to disable usage statistics reporting.
added 'up' navigation button to the settings screen.
Added 'mode details panel' usage tracking.
created package for analytics related code/logic.
added a Category enum to store all analytics related categories.
Starting to work on the follow-me UI
Android: Fixed wrong id on buttons.
Follow: By default use Leash for follow me, with 2Hz update rate
Merge pull request #808 from arthurbenemann/FollowImprovements

Follow detail fragment
Starting to work on the follow-me UI
Android: Fixed wrong id on buttons.
Follow: By default use Leash for follow me, with 2Hz update rate
Merge pull request #810 from arthurbenemann/FollowImprovements

Follow improvements
MAVLink: Add eclipse project file to MAVLink library
Version: Releasing version 2.4.1
Core: JRE should not be in our build path
GoogleServices: Library update.
integration of google analytics within droidplanner.
fixed issues preventing google analytics from dispatching recorded hits.