Trim domain name on submit

funkwhale_network/static/main.js

@@ -5,7 +5,7 @@ function submit () {
   var XHR = new XMLHttpRequest();
   var FD  = new FormData();
   var payload = {
-    name: document.getElementById('domain-input').value
+    name: document.getElementById('domain-input').value.trim()
   }
   XHR.onreadystatechange = function () {
     if (XHR.readyState === 4 && XHR.status === 400) {