REMOVED XStream API (because it's not working).

Signed-off-by: Michael Grammling <m.grammling@external.telekom.de>
REMOVED unused files.
REFACTORED DefaultConfigDescriptionProvider to XmlConfigDescriptionProvider.
REFACTORED: XStream API is provided within the bundle now.

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

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