deleted some useless stuff and backend integration

frontend/src/components/common/Button.jsx

@@ -0,0 +1,9 @@
+import React from 'react';
+
+const Button = ({ text, onClick }) => (
+  <button className="button light" type="button" onClick={onClick}>
+    {text}
+  </button>
+);
+
+export default Button;