Parameter editor dialog mobile

Plan-Simple Item: Use all remaining width for text fields

Fix ComplexMissionItemText unit test crash

* Fix minor spelling error

* Added support for the AUAV x2.1 Flight Controller
    also removed a duplicate entry for MindPX
    from src/comm/USBBoardInfo.json

Adds entries required to correctly identify, download and flash PX4
firmware to the AUAV X2.1 Flight Controller

* Update USBBoardInfo.json

Removed un-needed fallback entries. This has been tested!

Dealing with lack of Internet connectivity.

Allow FirmwarePlugin to provide vehicle icons.

Cleaning up some unused icons.

Done by using GridLayout

Rework joystick calibration (2)

Correct check for bad value from parseFloat

Add new Static fix type

Tidying up Mission Settings and Survey Settings

Work around using the Clear button while mobile keyboard is up.

Fix wrong QColor argument encoding.

Make buttons and comboboxes square again.

Remove duplicate resources

Allow disabling video recording

Set mobile flag based on the actual define.

Improve release logging, deal with MAVLinkDecoder shutdown