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.
It seems the PR incluces many changes related wih indentation, etc. that doen't seem to involve any "logical" change in the code.

This is related with style alignment? (I didn't have a style checker in my IDE, so probably I have introduced many style violations that you have fixed ;)