Issue #621: Add a work group management section in the administration
Groups management should only be possible from the global administration, not from the Groups homepage
Issue #746: Add support for filtering the list of groups displayed by the groups macro based on a specific value for a field
Done.
[misc] Use stylesheet extensions onDemand instead of currentPage
[cleanup] Applied codestyle
Issue #629: Separate group members into group administrators and regular members
Added an "edit group administrators" button in the workgroup page, and an "edit" button in the administrators page
[misc] Removed extra blank lines from the workgroup page
Issue #747: New feature: Studies
Done.