Bug 32313: Update guided reports column descriptions for items and biblioitems tables

Bug 32313: Update guided reports column descriptions for items and biblioitems tables

This adds missing column descriptions to the items and biblioitems
tables (used in guided reports for the Circulation, Catalog,
Acquisitions, and Serials modules).

It also updates some existing descriptions for consistency, removes
biblioitems columns that no longer exist, and sorts items and statistics
descriptions in the source file in alphabetical order.

Test plan:
1. Go to Reports > Guided reports > Create guided report.
2. Choose 'Catalog' for the module to report on, and then select
   'Next'.
3. Choose 'Tabular' for the type of report and select 'Next'.
4. Note that there are no descriptions for these column names
   (proposed column names shown in brackets):
   - items.itemnumber (Koha item number (autogenerated))
   - items.biblionumber (Biblio number (internal))
   - items.bookable (Bookable)
   - items.localuse (Total local uses)
   - biblioitems.ean (EAN)
   - biblioitems.collectiontitle (Series statement)
   - biblioitems.collectionissn (Series ISSN)
   - biblioitems.collectionvolume (Series volume)
   - biblioitems.editionstatement (Edition statement)
   - biblioitems.editionresponsibility (Edition responsibility)
   - biblioitems.cn_source (Source of classification or shelving scheme)
   - biblioitems.cn_class (Classification part)
   - biblioitems.cn_item (Item part)
   - biblioitems.cn_suffix (Call number suffix)
   - biblioitems.cn_sort (Koha normalized classification for sorting)
   - biblioitems.totalissues (Koha issues (borrowed), all copies)
5. Apply the patch.
6. Restart all the things (restart_all).
7. Reload the page.
8. Note that there are now descriptions for the columns in step 4.
9. Note that the descriptions for these columns are changed (for
   consistency with other tables, or clarification):
   - items.itype => Koha item type (previously Koha itemtype)
   - items.timestamp => Modification date (previously Timestamp)
   - biblioitems.timestamp => Modification date (previously Timestamp)
   - biblioitems.illus => Other physical details (previously
     Illustrations)
   - biblioitems.biblioitemnumber => Biblio item number (internal)
     (previously Biblioitem number)
   - biblioitems.biblionumber (and also acqorders.biblionumber and
     biblio.biblionumber) => Biblio number (internal)
     (previously Biblio number)
10. Sign off :D

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Eric Garcia <cubingguy714@gmail.com>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>