This wasn’t quite coded correctly. Mavlink needs heartbeat first, then
the shell command will be issued.

Preparation for auto-connect having no connect/disconnect buttons.

Tweak toolbar height for mobile.

It was using wrong size variable (and consequently too big)

Disable COM_RC_IN_MODE magic handling, as its causing confusion on all autopilot stacks. This is a developer thing which is actually much easier to not expose, even for the involved developers.