Add support for Json file string translations

SectionHeader no longer set width automatically

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

Visual cleanup

Adding missing qgcView to QGCMapPolygonVisuals instance in SurveyMapVisual.qml

Adjust colors
Remove unused image

Also change Plan Element selection ui

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