Improvements to the map

Far-reaching improvements to the map. Most of them are pretty small and
miscallenous and are mostly here to fix errors or improve the look and
functionality of some areas. Notable changes include :

- Extended Firing Range, made all Security EVA walls rwalls to fit the
fact it's a SECURE AREA. Rglass in Perma and Firing Range changed to
Rplasma glass (can take much more punishment, encouraging prisoners to
be less shit)
- New Medbay Storage area
- New Security Toilets area
- New Research Shuttle Dock area
- Secure Armory split from Armory/Warden group
- Radio Broadcast Room reinforced, given an Engineering access Command airlock and made more stylish. No-one knows what the fucking machine does still
- Sprites included
- Some secure areas now have more logic rwalling. This includes areas
like Engineering
- Added blast doors to HoP for crowd control
- Removed a fair amount of firedoors under windows. Those serve
absolutely no purpose and just make locked down rooms more messy, it'd
be like putting firedoors under walls
- Changed most hallway airlocks so that they only have one set of
firedoors instead of two