Support for reusable InstrumentValueArea control

Refactor instrument value controls

Fix QGCPopupDialog automatic flickable parenting

Use new QGCPopupDialog mechanism

Update value visuals to support value ranges

Initial support for value ranges

New value editing dialogs

Icon picker support

Icon support for values display

Fix blank display after page change in instrument panel

New grid based values page editor support

Fix even more bugs

Fix typo

Mavlink terrain protocol support

Skip invalid coords

Since gstreamer is enable, we can record and do mostly everything
Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Use consistent "Launch" naming

CameraManager: bug in CameraPageWudget.gml, stream variable not defined, also avoids a gray spurios window

Fix : COGAngle indicator was shown everytime, fix isCOGAngleOK

- NorthUp becomes NoseUp and is disable by default
- Changes on SVG to make them with the same diameter as the CompassDiag
- Change the order of the indicator layouts

- Remove HomeHeading / COG / HeadingToNext
- Add setting AdditionalIndicatorsCompass that group the previous
  settings

- Add setting for Heading to Next WP and Nort Up lock
- Add check for vehicle for every indicator to avoid showig them while
  no vehicle