Map update, icon update, code update

MAP
-Added R&D sector (May not work, needs testing)
-All Research type areas requires "research" access
-Added sulaco headsets
-R&D clothes errywhere
-Sulaco armory can now be unlocked by MP, LO or commander, so everyone can enter it without access.
-Squad access now has an display that names the squad areas (untested, should work tho)
-Added missing lights to bathroom
-Fixed flooring on tgstation when someone copy/pasted R&D stuff from that sector to old sulaco


ICONS
-New squad lockers icons! // Thanks Brainlezz!
-New squad prep door access icon
-New m41a, colt, smg,  (will be untill I make an actual smg, the so called sniper looks very similar to a smg tho) magazine icons!

OTHER
-LOs, MPs and commander spawns with a belt that contains a colt and 2 magazines
-Preferences mob preview updated
-2 more armor variations
-Moved unused maps to "unused" folder to avoid confusion.
Map tgstation3.2-Sulaco should be loaded