All settings wired and persistent
Cleanup non Airmap builds

Move all airmap related stuff to its own directory

Moved "Grid Lines" out of General Options and into the Video Stream Widget
Made a QGC custom Switch element

Added AirMap settings (SettingsGroup)
Added AirMap settings block to General Settings
Create macros to deal with the tedious repetitions within SettingsGroup
Removed old, hacked in setting for AirMapKey
Remove a few of the tons of build warnings

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

This reverts commit 52160d80.

- Added menu options to select new mode as well as new settings and defaults

Adding mux GStreamer plugin libraries to Android (to enable video recording on Android)
Adding an option to limit the amount to disk used for saving videos
Adding an option to show/hide the REC button (allowing plugins to handle the recording in their own way)
Adding simple frame grab to file

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