CAMERA_MODE_IMAGE_SURVEY support

Intrument Widget alternate control: Fix broken settings dialog display

Stable: Buffer overrun in UAS.cc

Offline map: Use FlightMap as base

This way:
* GCS location is shown
* It follows same centering semantics of FlightMap
* Note: Vehicle is not shown

Parameter force save and default disabled in non-advanced mode

Instead of resetting all parameters when some parameter change, explicitly define list of parameters that must be requested when a given parameter change.

Retry requests for storage and capture info.

Fixes: Mission linux libs, Console save to file

Removed guess work from what parameters must be refreshed/updated when some other parameter changes. Added a "reset" flag that indicates when a certain parameter changes, the list must be reloaded.
Don't send a signal when setting a fact if the new value is the same.

Better handling of resume mission upload failures

Internet availability test fixes

Fixed inverse logic in camera parameter retry count
Skip close timeout if not Windows

Increase param ack timeout.
Retry when param set failed.

This needs Qt 5.9. Do not merge it yet.

Mission upload: Extra paranoia around write index list

* Stable_V3.2:
  Better handling a mission altitude default
  Change to fixed value is altitude when switching to Manual grid
  New coloring for child indicators
  Add new map indicator colors
  Correct hiding of heading on TAKEOFF command
  Home Position reset while in edit mode

Mission/Survey related fixes

* If new Survey is set to altitude fixed value then use mission default
altitude
* If the user applies a new altitude to the entire mission change
surveys to fixed altitude and apply altitude

This way if the user switches away from manual the altitude is preserved