Added new example 23 to check mixed of communications

[aregtech]

There were several fixes in previous commits. In order to check the communication and fixes, created 2 new examples to demonstrate the data update notifications. All checks prove that communication work fine. The minor issue, which is neither a bug, nor features:

• When the service consumer looses network connection, the data (attribute) of the remote service is not automatically marked as invalid. One side, this may keep the information of the last available status. On the hand, since it is unknown how long the connection is lost, it might make sense to invalidate the data on Consumer side.

In addition, made changes in Makefile. Make it more clear.

[vukihub]

Looks good. The documents should be updated.