6995: Fix bug in event citation filter

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22857 4ae1f11a-8b86-4847-b8af-ab372f36d1fd
Fix bug in note filters

git-svn-id: svn+ssh://svn.code.sf.net/p/gramps/code/branches/maintenance/gramps34@22860 4ae1f11a-8b86-4847-b8af-ab372f36d1fd