sudden yaw changes can cause bad wind estimates

Many thanks to Andke for finding this bug!

this does a full mission reset (equivalent to rebooting)

this allows for manual throttle control during auto throttle
suppression. This is useful for keeping a petrol engine idling before
takeoff

this makes it possible to configure all stream rates via a parameter
file

it now provides no useful information as satellites_visible is in
GPS_RAW_INT in MAVLink 1.0

this isn't needed as the common variables are already protected by
cli()/sei()

this is called regularly, and causes the servo to twitch

limit to a max of 0.5g

this has caused problems with too many users

This saves 4 bytes of memory and will work better with the way we initialise the gps.

Change to the "Stability Patch" in Motors_Matrix in order to make it cover both the upper throttle range and lower, and also to cause it to raise/lower all motors when a single motor goes out of ranges.

add arduino chip detect
fix apm2,2.5 dialog test
add write timeout. this will stop planner hangs on bad serial devices.
change quickview decimal places to 0.00
fix map clicking issue.
fix wind direction wrapping
add airspeed use
modify firmware screen from Marooned
major flightdata tab change.
add save/load polygon from file
add some error handling dialogs

this solves the problem of people reporting that airspeed is not shown
when ARSPD_USE is zero.

allow up to 30% of bandwidth to be used for parameter send

saves a bit more flash space

this allows a few more things to fit in