add groups feature

lib/util/deviceutil.js

@@ -1,3 +1,7 @@
+/**
+* Copyright © 2019 contains code contributed by Orange SA, authors: Denis Barbaron - Licensed under the Apache license 2.0
+**/
+
 var logger = require('./logger')
 
 var log = logger.createLogger('util:deviceutil')
@@ -8,7 +12,7 @@ deviceutil.isOwnedByUser = function(device, user) {
   return device.present &&
          device.ready &&
          device.owner &&
-         device.owner.email === user.email &&
+         (device.owner.email === user.email || user.privilege === 'admin') &&
          device.using
 }