issue 1758 - Remove Bitcoin donation option from donation page

donate-head.html

 <style type="text/css">
 h2
 {
   padding-top: 20px;
   border-top: 1px solid #ccc;
 }
 
 label
 {
   display: block;
@@ skipping 87 matching lines @@
   border-color: #357ebd;
 }
 
 #form.none button.paypal:hover,
 #form.paypal button.paypal:hover
 {
   background-color: #3276b1;
   border-color: #285e8e;
 }
 
-/* Bitcoin */
-
-#form.none button.bitcoin,
-#form.bitcoin button.bitcoin
-{
-  color: #fff;
-  background-color: #f0ad4e;
-  border-color: #eea236;
-}
-
-#form.none button.bitcoin:hover,
-#form.bitcoin button.bitcoin:hover
-{
-  background-color: #ed9c28;
-  border-color: #d58512;
-}
-
 /* Secondary Form Elements */
 
 #form-fields
 {
   display: none;
 }
 
 #form.credit-card #form-fields,
-#form.paypal #form-fields,
-#form.bitcoin #form-fields
+#form.paypal #form-fields
 {
   display: block;
 }
 
-#form.credit-card #form-recurrence,
 #form.credit-card #recurrent-cancellation,
-#form.bitcoin #form-currency,
-#form.bitcoin #form-price
+#form.credit-card #form-recurrence
 {
   display: none;
 }
 
 /* This cannot be #donate because specificity is too low */
 #form #donate
 {
   color: #fff;
   background-color: #5cb85c;
   border-color: #4cae4c;
@@ skipping 126 matching lines @@
 
   var recurrenceValue = {
     get: function(recurrences)
     {
       var checked = document.getElementById("recurrence").checked;
       return (checked && recurrences.monthly) ? recurrences.monthly : undefined
     }
   };
 
   var providers = {
-    "bitcoin": function()
-    {
-      var recurring = recurrenceValue.get({
-        "monthly": "https://coinbase.com/checkouts/d46825e3f22461f6a25b3249f8ce7c2a"
-      });
-      openProviderPage({
-        action: (recurring) ? recurring : "https://coinbase.com/checkouts/ab08a165e21d72b503cff8f30bece652"
-      });
-    },
     "credit-card": function()
     {
       if (verify(priceValue))
         return;
 
       openProviderPage({
         action: "https://billing.micropayment.de/creditcard/file/",
         fields: {
           project: "dblock",
           paytext: formValues.name,
@@ skipping 171 matching lines @@
     {
       var provider = providers[document.getElementById("form").className];
       if (provider)
         provider();
     }, false);
   }, false);
 })();
 
 // -->
 </script>