Use new extraUnitField

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

Some android versions leave a focus arrow indicator turd in the
control. This gets rid of it.

Convert bool settings to SettingsFact

Causing data loss