Bug 19027 - Circulation rules: Better wording for standard rules for all libraries

Bug 19027 - Circulation rules: Better wording for standard rules for all libraries

In Home > Administration > Circulation and fine rules, the standard value for
"Select a library: All libraries" is confusing and leads to support cases.

Change wording to "Standard rules for all libraries".

To test:
- Apply patch
- Go to Home > Administration > Circulation and fine rules
- Verfiy that text in drop down 'Select a library' makes sense.

Followed test plan which works as intended. I agree with the wording it
is significantly clearer than previously
Signed-off-by: Alex Buckley <alexbuckley@catalyst.net.nz>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit c140b9129124262db27c9ba17f47134ec3232ada)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>