Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

This makes it possible to select more than one value
to be used in the parameter configuration, and since
the parameter is actually a bitfield - this is the
correct thing to do.

one of the drawbacks is that in the parameter listing
the value of the Fact will not be displayed as string
anymore, but with 'undefined: numerical-value', that is
the OR combination of the applied values.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>

Map control use different border color based on map type

Note that a change in zoom signals a `zoomLevelChanged` event; this in turn triggers `FlightDisplayViewMap` which sets the property changed in this commit to
```
onZoomLevelChanged: QGroundControl.flightMapZoom = zoomLevel
```

This triggers the following message in Application Output: `onZoomLevelChanged: QGroundControl.flightMapZoom = zoomLevel`.

This was the case before and after this fix, I don't know if that's a real issue though

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

- Load/Save working
- Entry point working

- Added new Advanced visualization

Plus new unit tests

I removed some needed headers from a top level file which then causes a
ripple effect downstream

Download Speed Tweaks (+2 squashed commits)
Squashed commits:
[ff0ef7e] Cleanup (remove OpenStreetMap)
[370fa1d] Done (+25 squashed commits)
Squashed commits:
[9f3368f] Need to check how many instances of MapEngine are active.
[d557eac] Download Optimization
[392f50a] Almost there.
Trying to optimize download.
[a49d1d2] Settings
[a94be97] Mostly there. Needs to finish options and map thumbnail.
[38d5a0b] Downloading tiles and deleting sets
[81101b9] More UI Work
[c597d4b] Downloading tiles
[a815e35] Get rid of OpenMaps
[7e177ea] More reorg
[fa6b671] Start handling create tile set
Fix signal order when creating fetch tile task
[2a31f4d] Refactoring
[268b906] Renaming things
[947d66e] Fix resource load error.
[19e2de8] Adding MapBox
[c73e627] Preparing download
[87bbf22] UI Tweaks
[3c32a86] A lot of UI code done.
[ece8ce2] Starting to deal with tiles
[7f387bc] Save tile set
[f66f343] Adding more code
[4de3418] Working
[f0cc25d] Done for the night.
[2d1d86e] Added SQL database for holding out own tile cache.
[d405a87] Convert to camel case as this has been driving me nuts.

Also added Center to Mission support