Feat shib-authorization account-error

1. Reading eppa value from request header
2. Sending to error page of eppa not valid
3. Added shibboleth authorization error page

app/static/scripts/function.js

@@ -23,6 +23,14 @@ function request_account() {
     })
 }
 
+function certify_account() {
+    socket.emit('request certification', {
+        fullname: document.getElementById("fullname").value,
+        email: document.getElementById("email").value,
+        username: document.getElementById("username").value
+    })
+}
+
 function renderDom(title, message, error_msg) {
     document.getElementById("form-wrapper").innerHTML = "<h3>" + title + "</h3><br>";
     document.getElementById("form-wrapper").innerHTML += "<p>" +  message + "</p><br>";