bugfix: missing return for the value of page_directory
Add a Ellipsis filter to the Twig template engine
The output filter can now set header information (title, description, keywords) for a kitCommand - need GET or parameter `set_header` with a ID, calls `kit2/command/{kitcommand}/getheader/id/{id} to get JSON with header information
class Alert can now directly prompt Alerts (using Bootstrap 3 iframe)
setAlert() can now retrieve additional debug information for logging
The kitCommand Basic class extends now the class Alert
added getPageIDbyPageLink() and existsCommandAtPageID()
introduce kitCommand support for Bootstrap 3