Added a new flag to control the presence of the "hazard" stripe marking on rooms
Implemented the "hazard" style room displays -- needs to be tweaked somewhat (not entirely happy with the underlying masking), but it works.
Implemented different room colours based off of flags. There's 4 raw UINT colour values in the top of UIStyleSettings that controls it -- atm, indoor rooms are the same darkish-blue, and outdoor rooms are a grey. I want to say some kind of light blue shade would be better for them, but I don't want to fart about with it for hours to find something that works (because it may also mean changing the map background colour, which then means probably fucking with the link icons too).
Added a "Hazard" flag to all current rooms where they are enemy encounters present to hang the hazard-striping off of, rather than in/out doors.