Docblocks
Docblocks
re #91 : Refactor ObjectConfig

 - Allow to make a config object read. Add KObjectConfigInterface::setReadOnly() and isReadOnly() methods.
 - Declare KConfigObject ArrayAccess methods final to prevent them from being extended.
 - Declare magic getter and setter methods as final to prevent them from being extended.
 - Add  KObjectConfig::getInstance() to return an object instance and make object instantiation extendable. Useful for object that do not want to return and instance of self.