Impossible to select a user in the "Impersonate" dialog

[Nicklas Nordborg]

If logged in as an administrator with enough priviliges (Act as another user) the "Impersonate..." menu item is added to the dropdown menu to the far right.

In the dialog that is opened, there is a selection list for selecting another user. Clicking on the "Select" button will open a dialog for selecting a user, but it doesn't update the selection list in the "Impersonate" dialog.

Workaround it to go to the "Administrate->Users" list page and use th2 "key" icon instead. This will open the "Impersonate" dialog with the current user already selected.

[Nicklas Nordborg]

(In [6523]) Fixes #1835: Impossible to select a user in the "Impersonate" dialog