Started on the class diagram
updated some more
updated the class diagram for the booking-component
BookingComponent up-to-date

Done?
Created MaintenanceDiagram
Updated MD
Made private in ClassDiagram
Experience in MD done
Room in MD done
MaintananceDiagram is DONE
Just kidding, I wasn't done at all #lastCommit
Updated MD
Updated some classes in MD
InterfaceMaintenanceProvidesForBookingClassDiagram (the world's longest word)
Created MaintenanceProvidesForBooking
Add, remove, edit Extra
MaintenanceProvidesForBooking DONE
InterfaceMaintenanceProvidesForBooking is DONE
Updated layout.
Made private in some classes.