Backlog/112

Mainly implements issue https://github.com/telefonicaid/fiware-connectors/issues/112.

It implements issue https://github.com/telefonicaid/fiware-connectors/issues/104 as well.
Here is where issue https://github.com/telefonicaid/fiware-connectors/issues/104 is implemented. An example of the related trace:

`time=2014-08-04T15:45:25.581CEST | lvl=INFO | trans= | function=<init> | comp=Cygnus | msg=es.tid.fiware.fiwareconnectors.cygnus.handlers.OrionRestHandler[79] : Cygnus version (0.4)`