Still working on having independent builds for each MAV, most of the work is done, only Central Widgets remain to be instantiated and menu-controlled based on the autopilot

VERY EXPERIMENTAL. Saving of location for the common widgets now working and persisted across sessions. Needs to be extended to the individual autopilot widgets

Fixed imagery rendering issues. Robot position in Pixhawk3DWidget is now derived from the global pose (lat/lon/alt) instead of the local pose.