Set root as parent skill by default (null).
Default root skill description.
Added reindex option.
Merge branch 'master' into skilltree
Copy and paste error (plugin-id) fixed.
PF-456:
Subscription of external calendars (CalendarFeed) returns empty list of events: end date can't be Long.MAX_VALUE because MAX_VALUE plus 1 day doesn't work for dates then.
Merge branch 'master' of git.micromata.de:projectforge/projectforge-webapp