Fixes radium not producing cures for virus2.
Merge pull request #2956 from comma/master

Virus fix
Merge pull request #2955 from Segrain/master

Medical clothes.
Fix issue causing depressurization of all shuttles.

@cib, you made all unsimulated tiles appear to be the size of a room, but neglected to also increase the apparent volume of gas in said "room."
Merge pull request #2960 from SkyMarshal/patch-2

Fix issue causing depressurization of all shuttles.