Refactoring for deplicated code deletion in getTracesBetweenInterval method
Remove notification sending for activeEnergy property change in Enocean smart plug
Change the implementation fo EnOcean switch in its signification

Now an EnOcean switch doesn't match the reality anymore but just interpret received signals has a click on a button
when a end user pressed it.
Lower the number of trace for Philips HUE light

 - Filter trace on varName (x, y, ct, mode, speed)
 - Rename some json keys for notifications (e.g. sat --> saturation)
 - Rename state metadata property in value in metadata.xml and notification
 - keep alert notification cause that indicate that the light is blinking
Merge branch 'YeastLab-traceManager' of https://github.com/appsgate2015/appsgate