Show Kratos general failure messages (for example for r wrong password), fix welcome message

backend/web/login/login.py

@@ -118,7 +118,13 @@ def login():
     identity = get_auth()
 
     if identity:
-        return render_template("loggedin.html", api_url=KRATOS_PUBLIC_URL, id=id)
+        if 'name' in identity['traits']:
+            # Add a space in front of the "name" so the template can put it
+            # between "Welcome" and the comma
+            name = " " + identity['traits']['name']
+        else:
+            name = ""
+        return render_template("loggedin.html", api_url=KRATOS_PUBLIC_URL, name=name)
 
     flow = request.args.get("flow")