Adds the maglite. Security spawns with it in their sec belts. They have a decent force value and are a little better than the common flashlight. Sprites by Nienhaus. Can be held in the sec belt and the armour vest.
Renamed maglite to seclite.
Refactor'd can_hold and cant_hold to use type paths instead of strings.
Removed an undefined object from the medical belt's can_hold list.
Added the seclite to the security vending machine.
Merge branch 'master' of https://github.com/Giacom/-tg-station into sec_maglite
Merge pull request #3224 from Giacom/sec_maglite

Adds the seclite flashlight.