Start reworking invoice things

RIGS/templates/invoice_list_active.html

@@ -1,13 +1,13 @@
-{% extends 'RIGS/invoice_list.html' %}
+{% extends 'invoice_list.html' %}
 
 {% block title %}
 Outstanding Invoices
 {% endblock %}
 
 {% block heading %}
-Outstanding Invoices ({{ count }} Events, £ {{ total|floatformat:2 }})
+Outstanding Invoices ({{ count }} Events, £{{ total|floatformat:2 }})
 {% endblock %}
 
 {% block description %}
 <p>Paperwork for these events has been sent to treasury, but the full balance has not yet appeared on a ledger</p>
-{% endblock %}
+{% endblock %}