user_actions form markup and styling

lib/unblockform.php

@@ -88,6 +88,17 @@ class UnblockForm extends Form
         return 'unblock-' . $this->profile->id;
     }
 
+    /**
+     * class of the form
+     *
+     * @return string class of the form
+     */
+
+    function formClass()
+    {
+        return 'form_user_unblock';
+    }
+
     /**
      * Action of the form
      *
@@ -127,4 +138,4 @@ class UnblockForm extends Form
     {
         $this->out->submit('submit', _('Unblock'));
     }
-}
+}