First steps of development (STATE DOES NOT WORK)

* added Changelog
* added TCA for the new field parentcategory for table tx_irfaq_cat
* refactored the domain modell
* added the mapping for table ir_faq_cat too setup.txt
* added the html output of what ist expected as an outcome to the fliud
template and added a table to give back the result of the list action in
the controller