Bug 26696: Fix colspan in payment table when credit exists

The colspan was adjusted for the total due when a new column
was added to the table, but the 2 lines for credits were missed.

To test:
- Go to any patron account
- Create a manual invoice
- Create a credit
- Go to the 'Make a payment' tab
- Veriy that the total lines at the bottom of the table are
  slightly off
- Apply the patch
- Verify that the total lines in the table now display correctly

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

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
(cherry picked from commit adfed0a945)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>

koha-tmpl/intranet-tmpl/prog/en/modules/members/pay.tt

@@ -129,11 +129,11 @@
     </tr>
     [% IF outstanding_credits.total_outstanding < 0 %]
         <tr>
-            <td class="total" colspan="11">Outstanding credits could be applied: </td>
+            <td class="total" colspan="12">Outstanding credits could be applied: </td>
             <td class="credit" style="text-align: right;"><button type="submit" id="apply_credits" name="apply_credits" value="apply_credits" class="btn btn-default btn-sm">Apply <strong class="credit">[% outstanding_credits.total_outstanding | $Price %]</strong></button></td>
         </tr>
         <tr>
-            <td class="total" colspan="11">Total due if credit applied:</td>
+            <td class="total" colspan="12">Total due if credit applied:</td>
             <td style="text-align: right;">[% total + outstanding_credits.total_outstanding | $Price %]</td>
         </tr>
     [% END %]