Fixes description for bio_face_mask.

The unit itself got the right description, but the packaged model
didn't.
Also blade.
Fixed placeholder description.
Merge branch 'master' of https://github.com/CleverRaven/Cataclysm-DDA into CBM-description-fix
Materials fix.
Additional futuristic materials.
Merge branch 'CBM-description-fix' of https://github.com/Rivet-the-Zombie/Cataclysm-DDA into Rivet-the-Zombie-CBM-description-fix