Bug 11577: Expand description of AllowRenewalLimitOverride

With the introduction of the new automatic renewal feature global syspref
AllowRenewalLimitOverride is expanded in meaning. It now gives the option
to override blocks if:

- the number of allowed renewals is exceeded
- the renewal is premature (No renewal before)
- the item is scheduled for automatic renewal
- the renewal is premature and the item is scheduled for automatic renewal

Sponsored-by: Hochschule für Gesundheit (hsg), Germany
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>

koha-tmpl/intranet-tmpl/prog/en/modules/admin/preferences/circulation.pref

@@ -161,7 +161,7 @@ Circulation:
               choices:
                   yes: Allow
                   no: "Don't allow"
-            - staff to manually override renewal blocks and renew a checkout when it would go over the renewal limit or be premature with respect to the "no renew before" setting in the circulation policy.
+            - staff to manually override renewal blocks and renew a checkout when it would go over the renewal limit or be premature with respect to the "No renewal before" setting in the circulation policy or has been schelduled for automatic renewal.
         -
             - pref: AllowItemsOnHoldCheckout
               choices: