* Revert "mavlink_mission: don't retransmit automatically"

This reverts commit 4e008fe89120e24e321e93fb551753242797f022.

* mavlink_mission: don't retry to send mission item

The mission items need to be requested one by one by a ground station.
This is a "pull" protocol and we should not retry to "push" the mission
items down.

If we do this we can trigger the situation where the autopilot keeps
retrying and the ground station does not time out because it keeps
receiving items (even though the items are the wrong ones).

* mavlink_mission: reduce retry timeout

When actively re-requesting lost mission items, we can be more agressive
and therefore lose less time when a mission item is lost on the way.

disable mavlink on aero telemetry if tfmini enabled and start on mavlink companion device for others (needs SYS_COMPANION to be 0)

Accidentally dropped in bad813e9

This is now required in the startup scripts

This prevents unexpected increases in stick sensitivity when stick is moved after periods of inactivity.

Ensure all data is set.

Ensure all data is set.

Ensure all data is set.

Ensure all data is set.

Ensure all data is set.

before it didn't integrate IMU values and HIGHRES_IMU was using the filtered values

This make the variable purpose more clear.

silence to 0 when the end of the string is reached