Fix sorting bug in API

lib/nbi.coffee

@@ -421,7 +421,14 @@ listener = (request, response) ->
           sort = {}
           for k,v of s
             if aliases[k]?
-              sort[a] = v for a in aliases[k]
+              for a in aliases[k]
+                if a[a.lastIndexOf('.')+1] != '_' and collectionName is 'devices'
+                  sort["#{a}._value"] = v
+                else
+                  sort[a] = v
+            else
+              if k[k.lastIndexOf('.') + 1] != '_' and collectionName is 'devices'
+                sort["#{k}._value"] = v
               else
                 sort[k] = v
           cur.sort(sort)