-new feature : pagination
-Fixed some bug in the search form
-Reworked management page

Signed-off-by: Mario <mariojothy@gmail.com>
-A creator can now hand over his creator status

Signed-off-by: Mario <mariojothy@gmail.com>
-Delete button is no longer displayed to persons that cannot delete the workspace
-Code refactored, more javadoc

Signed-off-by: Mario <mariojothy@gmail.com>