appveyor install gstreamer

Removing unused signal.

Radio: Small screen fixes

Update map URLs

Advanced Flight Mode: Small screen updates

Simple flight mode small screen

Remove unused code

Safety: Hide icon on small screens

Power small screen

General setting sizing

Plan view small screen fixes

Remove spurious debug message.

Doesn’t have a done key which doesn’t work with our user model. May
find a better fix later.

Tweaks for small screens on iOS.

Install gstreamer on OSX travis

Mission Plan Tweaks

Download gstreamer for OS X travis builds