Flight following mouse movement

High,

this is a new flight control. You can enable/disable it with space key (fire is now with left mouse button). When in mouse following mode, you vessel will follow your mouse cursor.

I've got only problem with the description item in the config screen of the game, it appears as it is defined in langstrings.inc.h (FLIGHT_FOLLOW_MOUSE). Don't know how to make a good items.