Initial support for global plan-wide altitude mode setting

Remove altitude mode warning which was causing recursion into dialog display and view switch problems

Remove missing support for QGCView fact missing overlays

Small visual tweaks and fixups for patterns

App messages now use simple modal message dialogs. Vehicle messages continue to use non-modal popup.

Don't show (Rel) all the time

Warn about Above Terrain usage

Translate to actual component id

ArduPIlot Follow Me setup

Fix binding from external Fact changes

Create a new Target FactControls, and add a custom target for the
Qml in the folder.

Restore QGC to its normal UI layout (buttons on toolbar)

Use new extraUnitField

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

Support for new AltitudeFactTextField

Work around android Qt bug where wrong virtual keyboard is displayed

This is in addition to the existing text edit control.

This is in addition to the existing text edit control.

Includes support for battery 2 setup

Flight management with date range, delete flights.

Adding missing qgcView to QGCMapPolygonVisuals instance in SurveyMapVisual.qml

Changed (selected) mission item color to primaryButton instead of buttonHighlight
Adjusted some colors for better contrast
Removed a few JavaScript exceptions caused by the order of object destruction