Updated crate and locker sprites and icon overlay code to use a new
standalone 'securitypanel' overlay to lay the groundwork for, in the
future, being able to install/uninstall access-code locks on containers
just like you can in airlocks. For lockers, little visual change at all.
For crates, the security panel is now an overlay within the 'handle'
section of the crate rather than being a chunky box off to the side on
front. Locked/unlocked/emag sprites also updated for the new panel
location.
Moved closet.dmi, crate.dmi, guncabinet.dmi, safe.dmi, and
walllocker.dmi to a new subfolder /icons/obj/containers, and updated all
references to them in code, for sake of organization. Ideally (IMHO),
we'd differentiate structure-based storage containers from item-based
storage containers, but that's a larger organizational task and outside
of scope- this just moves storage structures into one common location.
Deleted sciguncabinet.dmi, as its contents had already been migrated to
guncabinet.dmi and it was no longer referenced anywhere in the codebase.
Refactored hitby to be in line with TG's version.
Refactored item weight defines to a more clear naming scheme, also in
line with TG's version.
Refactored how the movement bumps are handled, ported signals to handle
them, in preparation for the movement update.
Fixed disposal hit bouncing the hitting atom on the wall.
Items do not push other items anymore if they are tiny.
Batrachophreno