add missing label & description to channelDTO

[marcelrv]

addresses openhab/org.openhab.ui.habmin#120

Signed-off-by: Marcel Verpaalen marcel@verpaalen.com

[marcelrv]

@cdjackson in case the label & description are null, do you want to have the UI pull them from the channeltype or is it better to do the test here inside the rest interface?

[cdjackson]

I thought this was already done when the XML was read (for static definitions). If so, I think it should be done in the ESH side when creating a channel (if that's where it's done for static definitions) so that static and dynamic channels are handled the same way?

[kaikreuzer]

lgtm. I think the question of how and when to derive label/desc from the type is not directly related to this PR as it imho should not take place in the REST resource, but rather either when creating channels internally or only within the UI itself.