Fix Plan save message on exit

Create a "Dead Mouse Area" control to eat mouse events underneath desired area. This is to prevent mouse events from leaking through controls underneath the area.
Replace original "NoMouseThroughRectangle" as this is more versatile.
Prevent mouse through events from leaking underneath the Fly View tool strip.

For whatever reason, showing the dialog through a function causes a crash in QML (undebugable--new word!)

Internet available now has a signal

Fixed inverse logic in camera parameter retry count
Skip close timeout if not Windows

Added top/bottom alignment state to map scale
Allow disabling instrument widget altogether
Added an otherwise redundant row to PlanToolbar so it matches the same button position as the main toolbar
Fixed typo (Math.max()) in ScreenTools
Fixed Javascript Exception in OfflineMap
Increased the import window size in OfflineMap
Added function to MainWindow to disable toolbar for a truly modal dialog
Added code so clicking on an open toolbar indicator will cause it to close

Instead of hardcoded "QGroundContorl" strings

Added a root loader to help deep nested children to show an element in the middle of the root Window.

* Make MainToolbarIndicators reusable by other views
* Change to font based ratio sizing

This prevent the visibility change from trashing source setting