Bug 28092: Add reserve notes column to holds to pull

Bug 28092: Add reserve notes column to holds to pull

To test:
-PLace a hold and add a reserve note to that hold
-Go to Circulation > Holds to pull
-Notice there is no reserve notes column
-Apply patch and restart all the things
-Reload the Holds to pull report and you should see a reserve notes column
-Go to table settings (/cgi-bin/koha/admin/columns_settings.pl) and make sure you can properly hide the column.
-Test other columns in the table and make sure you can properly hide them

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Petro Vashchuk <stalkernoid@gmail.com>
Signed-off-by: Joonas Kylmälä <joonas.kylmala@helsinki.fi>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>