ADSB server support provided through new ADSBVehicleManager implemenation

Fix scoping of visibility changes

Better flight trajectory point algorithm

Plugin'ized follow me support

Directions arrows in Fly View

Hide waypoint indicators unless they are really needed

Add Terrain toggle to MapScale control

Zoom buttons move to MapScale control

Configurable maximum distance on Go To Location

Update all files that use a QML Menu item to QtQuick.Controls 2.4 to solve the issue of a menu showing up in random places on Android.

New qml base log replay status bar

Clip PIP window so when video is set to fit width, the hight is clipped
Remove ExclusiveGroup from CameraCalc radio buttons
Remove ExclusiveGroup from FWLandingPatternEditor radio buttons
Set main window minimum width and height

Make ToolStrip font smaller (Desktop builds)
Check for auto configured video stream before testing video source type

Handle connection to non initialized target

Use a root based global variable (mainWindow.flightDisplayMap) instead of relying on child scoped names (_flightMap)

Fixed flight widget position.

Get rid of QGCView, QGCViewPanel and FactPanel. All messages and dialogs are now handled in the root window.

Fix jscript complaint

Hide guided map indicators when vehicle goes away

Better show/hide behavior of guided map indicators

Show Orbit center from telemetry

Show orbit telemetry status on map

* Add support for showing rotation on QGCMapCircle.
* Support rotation change for Orbit

Limit all queries to areas smaller than 500km^2. If an area of interest is greater, clip to 500km^2 centered on current ROI's center.
Removed the identifier "Airmap" from error messages coming from Airmap.
Added a clipping function to QGCGeoBoundingCube (clip polygon to given area)

Replacing colors with the ones provided by Airmap.
Adding border color and width.
Adding airspace ID so it can later be linked to the advisory list.

Added some basic color management for airspaces

Handle flight start/end time
Handle start/stop traffic monitor
Only start telemetry if enabled
Added a "Now" button for the flight start time
Collect advisories only when the rules change

Updates in general was only done if a POI changed. This caused changes related to something other than a change in POI to be ignore. The code now "resets" the POI when such changes occur (change of ruleset for example).
Ruleset selection is was not persistent. When reloading the list of rulesets for a given region, any previously selected ruleset would be reset to defaults.
Also fixed several new clang warnings.