Add support for geofence return point. Also fixed a bunch of bugs in geofence and rally point support.

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Fix loading of old GeoFence files

Ignore old version 1

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

This time to handle correctly updating plan/fly view when plan changes

Update the user model to a single controller instead of multiple

Instead of hardcoded "QGroundContorl" strings

Use component id from heartbeat

Conflicts:
	src/MissionManager/GeoFenceController.cc

Includes ability to load params

Also change Plan Element selection ui

- GeoFence support comes from plugin
- Circle fence support
- Better param support