Fix event for light state/reachable false
Fix event for light state/reachable false

Relatet GH issue: https://github.com/dresden-elektronik/deconz-rest-plugin/issues/32#issuecomment-326382256

dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin,dresden-elektronik/deconz-rest-plugin