updated to latest ESH version

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)
improved thing item provider to now serve dynamic icons and all things. Added it to the demo packaging

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)
fixed packaging and product definition

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)
changed ThingItemChannelLinkProvider to use ThingRegistry instead of ManagedThingProvider

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)
updated to latest ESH version

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)
changed log back configuration as a workaround for https://github.com/openhab/jmdns/issues/12

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)