Users page lazy multiselect group dropdowns
Instead of pre-rendering all multiselects with lots of group entries,
the current groups are now displayed as simple labels.
Behind the labels there is a pencil icon like for other fields.
When clicking the pencil icon, the dropdown will be spawned and will
open itself.
Upon closing of the dropdown, the label comes back with the updated
selection and the dropdown is destroyed.
Extra non-available groups also in list
Fix group sorting in user list group selection
* introduced new route settings/users/{id}/mailAddress
* kept old responses
* better error messages
* dropped lostpassword.php from settings/ajax
* cleaned up the UserList.add() and hand in user object instead of
each attribute as another parameter
* check for change permission of mail address
* proper response messages
* add switch to settings to show user backend
* user classes for headers and rows to unify the show/hide statement
* add user backend to response of user create request
* proper markup in settings area
Fixes the admin group disappearing from the list when updating the display as the result of a search.
This group data should probably be managed on the page entirely by the javascript GroupList object, but this seems like the interim method.