REVERTED outdated extender for XML config files.

Signed-off-by: Michael Grammling <m.grammling@external.telekom.de>
ADDED: The XML directory can be specified within the XML file tracker.

Signed-off-by: Michael Grammling <m.grammling@external.telekom.de>
REFACTORED: XML directory specified.

Signed-off-by: Michael Grammling <m.grammling@external.telekom.de>