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

This prevents problems with toolbox references from inside
QGCTool::setToolbox calls.

Adding a dialog telling the user the map cache database has been reset.

Adding a dialog telling the user the map cache database has been reset.

Map control use different border color based on map type

- Convert mission load/save to it
- Allow parameter load/save on mobile