Bad messages shown

Hello,

After you click on the button "Save categories", two messages are shown and both of them are bad.

This module is still showing debug information, in line 108:

  drupal_set_message(print_r($form_values,1));

Just after that, a message "categories updated" is sent to the user, but it should be spelled with capital C, like: "Categories updated", according to Drupal standards.