Restyle the billing invoices tab

static/css/directives/ui/billing-invoices.css

@@ -0,0 +1,25 @@
+
+.billing-invoices-element .invoice-title {
+  padding: 6px;
+  cursor: pointer;
+}
+
+.billing-invoices-element .invoice-status .success {
+  color: green;
+}
+
+.billing-invoices-element .invoice-status .pending {
+  color: steelblue;
+}
+
+.billing-invoices-element .invoice-status .danger {
+  color: red;
+}
+
+.billing-invoices-element .invoice-amount:before {
+  content: '$';
+}
+
+.billing-invoices-element .fa-download {
+  color: #aaa;
+}