RVRNEXT-2 add controller and view for oauth

views/oauth/oauth_error.php

@@ -0,0 +1,8 @@
+@extends(templates/layout_normal)
+
+@section(main)
+    <h2>OAuth error</h2>
+    <div class="box">
+        <p class="error justify"><?= $error ?></p>
+    </div>
+@endsection