minor changes
calendar header moved to separate view
added model change listener
localization bug fixed. menu is now translating after  menu model change
url changes when dep and group are selected
not working
bugs fixed
checkRoom backend begins
checkRoom done
checkDay for one event works
problems with GMT solved
checkRoom gets answer from server
checkRoom done(without transaction)
minor changes
Merge branch 'backend' into myrosia
save one event to db
one event save to db
save many events. load too long
one event sync with collections
save unique data into classes for one event