Fix cache problem when non admin users access the site.
There is a bug in the cern_toolbar that caches the username and users visiting see other people's usernames. This causes major confusion. To reproduce it I needed to create two service accounts that do not have administrator access. Steps to reproduce:
- in a private window login with srvaccount1
- observe srvaccount1 in the toolbar and close the private window
- in a new private window login with srvaccount2
- observe srvaccount1 in the toolbar again