Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Fixed places where the font family was not being defined (therefore using the default system font)

Reduce space between graphic and text

Simpler control design for better mobile display

The idea here is to prevent people from accidentally flashing the wrong firmware

This makes text show up better on map images

Android done.

UI Tweaks for all mobile platforms.

Was causing layout issues between mobile and desktop. Couldn’t get a
good looking layout to work on both.

Made then the same size of toolbar cell height

Everything is now based off of default font pixel size

Use default font wherever possible. Where that doesn’t work, use
ScreenTools::dpiAdjustPointSize.

Controls respect QGCPalette settings. Also added test window.