This makes it available on mobile builds

Multicolored polygon

Fix brand image visibility calculation

Temp removal of Onboard Files

- fixes #4148

Added a second polygon. This polygon is updated from the first polygon at each mouse click and is what will ultimately be saved upon completion of drawing.

Update VTOL command text

Update message

Too buggy to leave in for now

Fix line back to home for VTOL takeoff

Adjust incoming message on channel 0

SDL2: Add missing Info.plist file for SDL2 framework.

Use single mavlink_status_t array

Update MAVLink parameter definitions for ArduSub

Add ArduSub firmware branding

ArduSub Safety Tab and Lights Tab

Switch ArduPilot setup pages to new SetupPage usage, plus vehicle branding

SDL2: Remove code signature file to (hopefully) fix macOS Sierra build.