Bug 11189: Rename "Print" label in UNIMARC advanced search

Bug 11189: Rename "Print" label in UNIMARC advanced search

"Print" label for search on the 106 field is not correct in UNIMARC
advanced search:

- 106 field can be used for non printed ressources (manuscript...)
- "Print" is ambiguous for translation tool, as it can be understood as
  a verb or a noun.

The official label for 106 field is "Type of form".  The offical label
for 106$a subfield is "Medium designator".

I think "Physical presentation" is the best way to describe the content
of 106$a in a user understandable label.

Test plan :

Check the "Print" label is replaced with "Physical presentation" in OPAC
(prog theme and Bootstrap theme) and Staff Advanced Search

Signed-off-by: Frédéric Demians <f.demians@tamil.fr>
OK for me. Make sense for UNIMARC users.

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Amended patch: replace a tab with 4 spaces.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>