on mouseover on a filter there is only one button to open the filter details instead of two buttons (one to edit and one to delete the filter)
depending on the authorizations the view should be different:
if the current user does not have any update permission on the selected filter the headline of the modal dialog should be "Filter details", all fields are only read only (the user cannot edit or add something), there is no "Save" button
when the user user has update permission on the selected filter the headline of the modal dialog should be "Edit Filter" , all fields can be edited, there is a "Save" button
when the user is allowed to delete the selected filter, there is a "Delete filter" button to delete the current filter