Fixed passive stabilisation not enabling when active control was off.

A 5th example of me being sloppy.

* Slip prevention is no longer reset when toggling active control,
* Trim adjustment now ignores sides with active control disabled.

* Manual Throttle slider is now usable on uncontrolled and passive mode-only thrusters,
* Inertia dampers now take uncontrolled thrusters into account,
* When switching thruster modes, thrust calibration is now performed only on sides where controls have been actually changed,
* Thrusters no longer fire whenever CoM shifts.

Fixed my own sloppiness for the fourth time.

Fixed my own sloppiness for the third time.

Removed thruster and cockpit tags; mod now stores in CustomData.

FIxed my own sloppiness again.

Further improvements to trim routine.

* Fixed calibrated limits not being assigned properly to thrusters,
* Restored cockpit input reading,
* Slight improvements to trim routine,
* It's now possible to mix controlled and uncontrolled thrusters on the same side.