Redcore 242 webservices load data from table

additionally I added:
check for Joomla user if client credentials is selected
fixed setting status code on some unix systems
added check for filter, search, primary and required field used in api later on. It is also added in documentation generator
added filtering / searching in generic (dynamic) model class
fixed Autoloading on Unix system where case sensitive loading of folders failed on OAuth2 Server
added status code for no data