Initial version of discovery and inbox services

Also-by: Dennis Nobel d.nobel@external.telekom.de
Also-by: Oliver Libutzki o.libutzki@external.telekom.de
Also-by: Michael Grammling m.grammling@external.telekom.de
Signed-off-by: Kai Kreuzer k.kreuzer@telekom.de
Merge branch 'discovery' of https://github.com/qivicon/smarthome into qivicon-discovery

Signed-off-by: Kai Kreuzer <kai@openhab.org>

Conflicts:
	features/org.eclipse.smarthome.feature.runtime.core/feature.xml
Merge branch 'qivicon-discovery'