added function to select roles
added mapping for checkboxes and select all checkbox
added values of dropdown multiple select to submit
removed permissions display, bugfix for new users
removed methods to display permissions
removed old todo from test
added roles and selected langues to save operation
added todo for drop-down-multiple-select, fixed save of existing data
added support for deselected roles, bugfix in controller to delete userroles
changed behaviour on delete of user
changed navigation after save
added test for put with removed role