fixes:
- the saving of the users filter did not work - it alwes resetted the filter
- the activate/deactivate filter did not hide the filters and also was not stored
changed the order of filters - now the class of service is after board and projects
due date filter: changed label and added the possibility to show only tasks which do not have a filter
Changed the behavior of the textual filter to align with the rest of the filters
fix: the "activate" did not hide the "filters" if it was false on load
Added the "num of hidden entities" to the filter
fix: incorrect counting of the filtered out entities for "project on board"
fix: the num of hidden fields has been incorrectly calculated when just reacting on server events