Mission drag visuals

Wait until parameter load complete for Mission Load

Remove deprecated config option

Mission controller Unit Test

Missing dependencies for video streaming on iOS.

Allows for signal count > 1

Some work for iOS

APM stack mission support

Also merged MissionController and MissionEditorController into single
MissionController implementation

Fix z order

Fix channel index reordering notification

QtCreator now default build environment

Add status text and voice output support

Use tablet position for initial Fly/Plan location

Preliminary work on the Flight View