Bug 26595: Add the option to hide the SMTP server column

This patch adds

Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

admin/columns_settings.yml

@@ -259,6 +259,8 @@ modules:
               columnname: library_ip
             -
               columnname: is_pickup_location
+            -
+              columnname: smtp_server_info
             -
               columnname: actions
               cannot_be_toggled: 1