Fixes #4322

* There's probably a much more "modular" way of doing this, but, eh
View Variables Option:  Add/Remove Verb

Since we can't edit the verbs variable directly this allows us to do so safely.

It builds a list of procs and verbs for the mob type and allows the admin to add it.

Want to add self_destruct to a cyborg?  It will show up in Commands tab
Want to add RevConvert to a regular Rev?  Feel free!

Want to remove whisper from some loud mouth?  Go wild!

Adding procs that aren't usually available to players will create a commands tab, primarily this is for debugging since Advance ProcCall on mobs is awful.

I figured this would be useful when I noticed traitorpanel added RevHeads didn't get their RevConvert verbs and I could find no way of adding it otherwise.
Removed pointless output

* There's something here about var/revsafe being used for heads/implanted people
... or something like that
Merge pull request #4336 from Ccomp5950/add_verb_VV

View Variables Option:  Add/Remove Verb
Merge pull request #4333 from Kilakk/master

Fixing #4322, flashes converting people in rp-rev
Adding Cancel options for Adding Verbs.
Merge pull request #4344 from Ccomp5950/VV_addverb

Adding Cancel options for Adding Verbs.
Private message fixes.  Stealth-mode / admin != maroon

Stealth-Mode Admins won't have their keys show up in the title of private messages anymore (unless the person sending the message is mod+)

Admins PM's to players will show up as red again.  You are welcome Virgie!
RP-revconvert bugfix

Now only humans that are logged in, alive, and not already a revolutionary (no special_role) show up in the list.
Instead of EVERY mob type (simple_animals, borgs, etc.)
Cryopod icon_state fix.

Missing _ in the icon states.
Merge pull request #4349 from Ccomp5950/cryo_fix

Cryopod icon_state fix.
Merge pull request #4348 from Ccomp5950/rp_revconvert_fix

RP-revconvert bugfix
Merge pull request #4347 from Ccomp5950/hidden_admin_name_fix

Private message fixes.  Stealth-mode / admin != maroon
Merge remote-tracking branch 'upstream/master'

Conflicts:
	code/game/machinery/cryopod.dm
	code/game/objects/items/devices/flash.dm