btcpay working! added bitpay client code to source tree to fix a bug

fixed a stripe race condition

added account balance warning to account balance page

capsulflask/templates/account-balance.html

@@ -8,6 +8,11 @@
 </div>
 <div class="half-margin">
  
+  {% if has_vms and has_payments and warning_text != "" %}
+  <div class="row">
+    <pre class="wrap">{{ warning_text }}</pre>
+  </div>
+  {% endif %}
   <div class="row">
     {% if has_payments %}
     <div>
@@ -43,7 +48,7 @@
           </li>
           <li><a href="/payment/btcpay">Add funds with Bitcoin/Litecoin/Monero (btcpay)</a></li>
     
-          <li>Cash: email treasurer@cyberia.club</li>
+          <li>Cash: email <a href="mailto:treasurer@cyberia.club">treasurer@cyberia.club</a></li>
         </ul>
       </li>
     </ul>