Uses PropertyInfo now.
Merge branch 'master' of git.micromata.de:projectforge/projectforge-webapp
Added Skill Tree page entry and i18n keys.
Corrected author and e-mail.
Added missing classes to index.
excel.
Index on calendar_fk, start_time and stop_time.
Calls now UpdateEntry#createMissingIndices() on all initialization entries of every plugin.
Merge branch 'master' of git.micromata.de:projectforge/projectforge-webapp