Merge branch 'fix-98-no-price-in-label' of daimrod/coin into master

coin/billing/templates/billing/invoice_pdf.html

@@ -170,7 +170,7 @@
           {{ detail.label }}
           {% if detail.offersubscription %}
             <br/>
-            <span class="subscription">{{ detail.offersubscription.offer }}
+            <span class="subscription">{{ detail.offersubscription.offer.name }}
             {% if detail.offersubscription.offer.reference %} ({{ detail.offersubscription.get_subscription_reference }}){% endif %}
             </span>
           {% endif %}