Constructs missing all their abilities -- Taken from /tg/

Desc of constructs and cult mode promises certain abilities to various
constructs that were missing. Also fixes some typos.
Typo compile fix
BS12 compile fixes for Constructs
Merge pull request #4246 from ZomgPonies/bs12

Constructs missing all their abilities -- Taken from /tg/
Merge remote-tracking branch 'upstream/dev-freeze' into dev
Resolved custom_items.dmi.