Stable merge

Fix merge screwup

Joystick make over

Reset Parameters Warning Message

Upstream Stable merge

Windows: Switch to 1.14.4 gstreamer

Support up to 64 buttons, not limit to 16
Send a single button command and not a stream of commands at 25Hz
Send button commands through signals (it's coming from a different thread)
Hide gimbal support through analog channels (there are no MAVLink messages to handle it)

Switch to 1.14.4 gstreamer

Map gimbal controls
Keep track of gimbal position within Vehicle

Add gimbal to external control signal

Video item crash

Update

Guard against no geometry being set

Expose BATT_AMP_OFFSET and add Blue Robotics power sense module

Firmware update: add KakuteF7 support

Add camera trigger
Add video start/stop/toggle recording
Add gimbal pitch and yaw