Core: Add a Mission Item to do building mapping
Android: Implement the Building mapper on Android
Merge branch 'master' into building_mapper
Android: Update the UI when parameters of the survey are changed
Survey: Quick update on the survey tool to make the gridLines alternate in sequence
Survey: Quick fix to the circle radius on the Building Mapper tool
Merge pull request #1170 from DroidPlanner/building_mapper

Building mapper
Circle: Change string
Editor: Simplify the Circle object,

Because now we have the buildingMapper for survey missions
Android: Removing unused fragments and widgets.

Removed:
* Radio Calibration
* Tuning fragment
* RC Mode setup
* OnScreen Joysticks and preferences
* SeekbarWithText widget
* NumberEditField widget
* FillBar widget
* RC override preferences
Merge pull request #1171 from DroidPlanner/circle_simplify

Circle simplify
Merge pull request #1172 from DroidPlanner/cleanup_of_fragments_and_widgets

Android: Removing unused fragments and widgets.