Fix for ordering hidden supplypacks.
Merge pull request #3013 from Segrain/master

Special Operations crate.
Merge branch 'master' of https://github.com/Baystation12/Baystation12
Items for wizard den, mental focus added to spellbook.
Vox oxygen toxicity, vox breath mask, nitrogen tank for spawning.
Oxygen toxicity fix. Whoops.
Added ability for tanks to be held on vox suits.
Merge pull request #3021 from Zuhayr/master

Added psychic items to wizard's tower, added focus to spellbook.