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

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

This allows for better multi-vehicle testing

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

For Video Streaming usecase, QGroundControl doesnt support changing of
Video Source or URI settings. Restart of QGroundControl application was
required for the changes to get applied. The issue is now resolved by
restarting the video receiver pipeline with new video source/setting.

Signed-off-by: lbegani <lalit.kumar.begani@intel.com>

* Map type now set from General settings
* No map type control in maps

Instead of hardcoded "QGroundContorl" strings

No more user prompting