fixed wrong contact data since the original was used in Buchs
fixed layer to level in ost garage
added name to stairs for testing reasons
removed room=toilet tags, since they were being used incorrectly
removed node of the library since it already has the room
fixed room 3.017a, since apparently it was a relation
added email, phone numbers and websites of institutes and added the WERZ in Zug
fixed the corridor in building 5 (seriously, who the frick mapped this???)
fixed another elevator's level assignment