When attempting to strip a human, wearing pickpocket gloves makes
certain actions stealthy. Some of the checks for pickpocket gloves would
runtime when a non-human mob attempted to pickpocket certain slots;
these runtimes have been fixed.
As a consequence of this change, cyborgs - and perhaps certain other
mobs - will now be able to remove IDs and empty pockets.
Instead of the AI crew_monitor being a per-AI variable, it was shared by
all AIs, and recreated each time a new AI was created, as part of that
AI's contents. Bots create and delete a new AI every time they transmit,
which means the crew_monitor would be deleted the moment a bot spoke
over the radio, causing it to runtime.
It is now a per-AI variable.
A port of https://github.com/d3athrow/vgstation13/pull/4377

Allows brooms to be wielded with 2-hands. Doing so places the broom
between your legs so you look like you are riding it.
You can also put a horsehead mask onto the broom to create a stick-horse
to ride. This can also be wielded, but will ALWAYS appear between your
legs.
And for the more magically inclined, wielding a broom or stick-horse (2
hands!) will cause you to ride it like a witch, giving you the ability
to bypass hazards such as tables and banana peels.
This commit fixes the following things:
- Get_Area() now properly returns the area
- Events will no longer runtime upon being manually triggered by an admin
- The prison break event works again
- Grabbing will no longer runtime (May result in people with pixel
offsets from a grab being stuck, better than a runtime)
This commit makes the ventcrawling system operate independant of
ventcrawling verbs. Every type of /mob/living now has a ventcrawling
variable, which allows them to interact with the ventcrawling system if
set to 1 or 2. The AltClickOn() defines for each ventcrawling mob have
been removed, and replaced with a single AltClick() define on ventcrawl
machinery.
This commit comments out all of the controversial code from the new grab
system. The code is being left non-hard-deleted as an example, the
framework would be a shame to kill.