moved all freeze related to sitefreeze
fixed overview part
code cleanup
more code cleanup
course list bug fixed
fixed fagplanindex issue
fixed test data example issue.
doc stuff
doc stuff
fixed semesterplan classname omission
added trailing / on URL
remoived stale print lines
temporarily uncommented all ics stuff
fixed issue related to non-exiting sections
done handlin site freeze warnings and errors
reintroduced ics
Added gracefull handling of no semester csv file
added default values for startweek and endweek
added class to calendars
fixed sitebuilder
updated ics handling.
now doing URL subdirs instead of filename parsing.
added check for classname existence
some cleanup