Added a root loader to help deep nested children to show an element in the middle of the root Window.

And fix broken file path to save video on windows

This makes text show up better on map images

qgcView was coming through null causing widget dialog to not pop up

Made QGCCorePlugin derive from QGCToolBox and expose everything through the same mechanism as everything else.

This gets it above your head

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