Bug 24201: (follow-up) Show desk information at lower screen widths

Bug 24201: (follow-up) Show desk information at lower screen widths

The staff client header menu adjusts responsively to narrower viewport
widths, but for the logged-in-user menu this requires showing and hiding
part of the template which duplicates information. This patch adds a
copy of the current desk information to the part of the template shown
at narrower widths.

To test, apply the patch and view any page in the staff client.

 - Narrow your browser so that the viewport is less than 800px wide.
 - The logged-in-user menu should change from text to a single "user"
   icon.
 - Clicking the icon should display a menu which includes labeled
   information about the current desk.

Signed-off-by: Nicolas Legrand <nicolas.legrand@bulac.fr>
Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>