Merge remote-tracking branch 'qivicon.smarthome/xml-processing-contribution-final' into config-discovery-dev

Signed-off-by: Alex Tugarev <telekom@tugarev.de>
Added "xstream" library to "o.e.s.config.xml"

Signed-off-by: Alex Tugarev <telekom@tugarev.de>
removed outdated feature from categories

Signed-off-by: Kai Kreuzer <kai@openhab.org>
Fixed errors after integration of xml-processing

Signed-off-by: Alex Tugarev <telekom@tugarev.de>
Merge remote-tracking branch 'qivicon.smarthome/config-discovery-dev' into integration

Signed-off-by: Alex Tugarev <telekom@tugarev.de>