Allow Special settings edits in game

[Tnamrod]

Allowing us to change special settings or at the very least the new Roll/Pitch dead-zone and gradient options would make fine tuning the settings much easier instead of having to edit, start a mission, leave, and repeat.
I don't see a reason why these aren't able to be changed in a mission other then a sub-par implementation in the back-end, changing the afterburner detent and the control settings should be similar to changing a keybind in the controls menu.