moved Informatik Faculty to first place in List
completed add Series view
extended AppointmentService with Series deletion functionality
added delete buttons to views and delete Series functionality
extended AppointmentService with Room specific daterange queries
overwork roomOccupancy search layout
roomOccupancy view has some bugs, but the controller json interface for room occupancy is working
removed semester member from Appointment
removed semester from views
Merge branch 'AppointmentExchange'