Bug 37662: Improve library information text consistency

Bug 37662: Improve library information text consistency

This improves the consistency of the text between the staff
interface library information listing page, and the add,
view, and modify library pages. It also improves the text
for some field hints.

Test plan:
1. Go to Koha administration > Basic parameters > Libraries.
2. Note these inconsistencies:
   2.1 Library hours - the text if no hours are set:
       - For the table, the text is "Library hours not set"
       - For the view, add, and modify library pages the text
         is "No opening hours have been set."
   2.2 The column and field names for library hours:
       - For the table, the column name in the list of libraries
         is "Library hours".
       - For the view, add, and modify library pages the field
         label is "Opening hours".
   2.3 For the "MARC organization code" field, there is no
       colon (:) on the view, add, and modify library pages.
   2.4 For the "OPAC info" field name, "info" is not spelt
       in full.
   2.5 The hints for the Reply-To and Return-Path fields use
       this format "Default: <SystemPreferenceName> system
       preference" pattern, but the MARC organization code
       field doesn't.
3. Leave tabs open for the library listing, view, and modify
   library pages.
4. Apply the patch, then duplicate and refresh the tabs for
   the library listing, view, and modify library pages (so
   you can compare the differences).
5. Note that the inconsistencies in step 2 are now fixed.
6. Note that the hint text for these fields is changed:
   6.1 IP field: active voice
   6.2 MARC organization code: follows the pattern used for
       the Reply-To and Return-Path fields.
   6.3 Public: 'yes' to 'Yes'
7. Sign off D:

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Olivier Vezina <olivier.vezina@inLibro.com>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>