Fixed some warnings in the installer.

tbrehm

2011-07-25 ed30c60150ffda0301eb1f8d30c93cac94de41df

 server/plugins-available/maildrop_plugin.inc.php

@@ -60,6 +60,7 @@
      Register for the events
      */
      
      $app->plugins->registerEvent('mail_user_insert','maildrop_plugin','update');
      $app->plugins->registerEvent('mail_user_update','maildrop_plugin','update');
      $app->plugins->registerEvent('mail_user_delete','maildrop_plugin','delete');