UPDATE: Fix to stream/userpage routing, Added UserPage and Tidy to code;

Added ability to visit a user's profile page from their stream;
Cleaned up code formatting, primarily changing from single quotes to double quotes;
Removed unused SignupForm component;

frontend/src/pages/NotFoundPage.tsx

@@ -1,10 +1,7 @@
-import React from 'react';
+import React from "react";
 
 const NotFoundPage: React.FC = () => {
-	return (
-		<div>
-		</div>
-	);
+  return <div></div>;
 };
 
-export default NotFoundPage;
+export default NotFoundPage;