There can be multiple managers of a sponsorship, so for all of them to
be able to view (and pay) the invoice, we need to use the secret-url
link rather tha th eone expecting the user to be the same one as the one
who created it.
Spotted by Cornelia Biacsics
</p>
<ul>
{%for v in pendingvouchers%}
</p>
<ul>
{%for v in pendingvouchers%}
- <li>Invoice #<a href="/invoices/{{v.invoice.id}}/">{{v.invoice.id}}</a></li>
+ <li>Invoice #<a href="/invoices/{{v.invoice.id}}/{{v.invoice.recipient_secret}}/">{{v.invoice.id}}</a></li>
{%endfor%}
</ul>
{%endif%}
{%endfor%}
</ul>
{%endif%}