Fix password reset confirmation redirection. (#61)

Fixed password reset redirection to dashboard page if user
is already logged in.

VAN-234

src/common-components/UnAuthOnlyRoute.jsx

@@ -0,0 +1,22 @@
+import React from 'react';
+import { Route } from 'react-router-dom';
+import { AppContext } from '@edx/frontend-platform/react';
+
+import { DEFAULT_REDIRECT_URL } from '../data/constants';
+
+/**
+ * This wrapper redirects the requester to our default redirect url if they are
+ * already authenticated.
+ */
+const UnAuthOnlyRoute = (props) => {
+  const { authenticatedUser, config } = React.useContext(AppContext);
+
+  if (authenticatedUser) {
+    global.location.href = config.LMS_BASE_URL.concat(DEFAULT_REDIRECT_URL);
+    return null;
+  }
+
+  return <Route {...props} />;
+};
+
+export default UnAuthOnlyRoute;