Reduce the access to med dispensers and lockers to only medstaff

[Superlagg]

I usually go MDoc to test out chem recipes, like a scientist with access to maint and an excuse to hang around downed people. Plus MDoc traitors get the syringe gun and cheap poison. If it weren't for Toxins, the scientist would be the redundant one!

I think what puts MDocs apart from the other medbay buddies is that they don't really have any responsibilities other than heal people. Kinda like a staff assistant with a nanomed. It's not much, and needs to be expanded, but it's a start.