Always show the message reply form

The button to dynamically hide/show the form was not working due to a conflict with the framework's `.hidden` style

plugins/unl_theme/css/unl_theme.css

@@ -73,3 +73,11 @@
 .elgg-page-footer {
     padding-top:20px;
 }
+
+#messages-reply-form {
+    display: block !important;
+}
+
+.elgg-menu-item-reply {
+    display: none !important;
+}