Merge maid profession and accoutrements.

Conflicts:
	data/json/item_groups.json
Merge some content adjustments.
Books the "OTHER" category

This should be absolutely all the other stuff that needed booked.

(Doesn't cover personal armor.)
json syntax

We should really change the Big Book to "manual_firstaid" for
syntax-simplicity but that'll break all the tilesets.

So, separate PR.
fixes typo

Saw this just after it merged.  Sorry.
Merge pull request #5210 from KA101/fix-maid-typo

Fixes typo in Maid profdesc
MA debug reenabled

Plus extra Matrix reference.
got rid of todo
Make null furniture and terrain builtins and ensure they compare to NULL / 0
prevents terrain/furniture from extra jsons from becoming ter/furnlist[0]
Merge branch 'master' of https://github.com/CleverRaven/Cataclysm-DDA into profession-gender

Conflicts:
	data/json/professions.json
nuke t_null / f_null json entries which do nothing
Recipe debug

I ground through most of this myself but AD provided an ear and a
pointer that came in handy (I'd missed a line when I grabbed some code.)
Thanks for the assist.
Adds chems and reading material to apt bathrooms

No guarantees, but better than nothing.  Codehero spotted for me; much
obliged.
Updating .pot file for translation needs
The Saiga-12 is not a fully automatic weapon.
Fixed the "maid" profession

Now has a male "Butler" option, and underwear
Made the new description tab aware of profession genders
Made tab switch genders for all professions at chargen

Now professions with no gender-specific names simply say "switch to
(male|female) professionname" instead of "switch to gender appropriate
name"
Fixing block brackets
Make hallucinations produce messages when they hit you again.