Make CalendarController singleton.
Fix bug that calendar is sometimes not set.
Remove all old calendars.
Remove automatically add events.
Fix modules extracation if the module key(!) contains a space like
"BS1 "
Show add modules after first start.
Merge branch 'master' of github.com:ocean90/wpf-stundenplan
Add module names to menubar and update them automatically after adding
new onces.
Remove already existing modules.
Merge branch 'master' of github.com:ocean90/wpf-stundenplan

Conflicts:
	stundenplan/MainMenuViewController.m
Use hardcoded colors, because the modules are dynamically now.
Merge branch 'master' of github.com:ocean90/wpf-stundenplan

Conflicts:
	stundenplan/MainMenuViewController.m