fixes issue #1623

thanks to klrill-ka

fixes issue #1622

thanks to klrill-ka

also try to start external ms5611

fixes issue #1617

Also minor format and commenting addition

this makes rc targeting much easier without drift

normalised input, taking into account dead zone

No functional change

The msg is now periodically sent to the GCS, instead of only on request.STREAM_EXTRA3

This is useful for GCS trying to plot the camera footprint.

this allows TRIM_AUTO to work for flaperons

fixes issue #1188