Major rework to support terrain profile display and terrain collision reporting

Out Survey polygons with KML save

Add global palette object to QGroundControlQmlGlobal for generic usage

Added pass/fail/pending text colors to the QGC palette which default to standard text color. Added such that custom builds can override

Toggle Rally Point insertion on/off.
Highlight current Rally Point and current Waypoint.
Use tab bar instead of a row of radio buttons for selection (Mission, Fence, Rally).
Fix QGCHoverButton to handle proper checked state toggle.
Get rid of the many arrays used to define behaviors for the ToolStrip. They are now all defined within its model.
Fixed color for disabled text within ToolStrip (it was invisible)

Export color palette in formats that can be directly used by QGC and custom plugins (in addition to the original Json)
Tweak palette export UI

Eliminated flight widget "states"
Define flight widget top margin (plugin options)

Adjust colors
Remove unused image

Increasing a bit the bottom margin for the confirmation dialogs
Changed the color for the guidedActionConfirm dialog to the palette’s alertColor
Disabled onHeightChanged on ToolStrip for the time being as it was not working. I need to come back to this and see why it hides “optional elements” even though I have plenty of space for them.
Adjusted the color for disabled text so you can read it within the ToolStrip

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

Map control use different border color based on map type

Plus lots of other tweaks to ui for visuals

Everything is now based off of default font pixel size

Made light palette reverse of dark palette

Controls respect QGCPalette settings. Also added test window.