On 5.7 and 5.8 somethings this would happen:
* The menu would be ordered incorrectly due to bug in Instantiator
* The menu would be positioned incorrectly

Changed (selected) mission item color to primaryButton instead of buttonHighlight
Adjusted some colors for better contrast
Removed a few JavaScript exceptions caused by the order of object destruction

* Map type now set from General settings
* No map type control in maps

Instead of hardcoded "QGroundContorl" strings

Shows touch area extents when turned on

- Fix imports to support 5.7
- Move properties to correct location