Updated design
Updated DataModel. Changed Event getEvent to Event[] getEvents
Removed IOExceptions from networkprotocol.
Fixed datamodel.
Updated DataModel. Added/Changed add/removePollListener.
Changed add/removePollListeners to add/removeWaitListeners
Removed the WaitResponse class. It was unnessecary.
Added handeling of WAIT_DAT to server loop. Loop should now be finished.