feat aup field for account creation

1. Add aup field as a checkbox
2. Enable submit button (for account creation) only when aup field is checked
3. Send this flag to rabbitmq agents in the backend

app/static/scripts/function.js

+function check() { 
+  var submitButton = document.getElementById("submit");
+  let ckbox = document.getElementById('agree');
+  submitButton.disabled = !ckbox.checked;
+};
+
 function displayloading1() {
     $('#overlayModal').modal('show');
 }
@@ -12,7 +18,8 @@ function request_account() {
         fullname: document.getElementById("fullname").value,
         email: document.getElementById("email").value,
         reason: document.getElementById("reason").value,
-        username: document.getElementById("username").value
+        username: document.getElementById("username").value,
+        aup: document.getElementById("agree").checked
     })
 }