Derp
Merge pull request #3747 from comma/master

Applied Arancalos fix for firedoors, no more process for them
Typo fix.
Typo fix.
Missing language.
Missing verb.
Examining fix.
Typecheck.
Fix for pockets.
Better check.
Merge pull request #3749 from Segrain/master

Smallfixes.
Merge remote-tracking branch 'upstream/master' into dev