Feature/109

This PR adds a TDAF-compliant Conversion Pattern to log4j, including a transaction id. The README and some templates have been modified accordingly.

The issue #109 will be completed when all the traces are revised; this is necessary to create the alarm conditions table.
The `% 1000` is precisely to avoid the overflow. This ensures we use all the 999 possibilities:

```
1406795532-999-0000000000 (initial id)
...
1406795532-999-9999999998
1406795532-999-9999999999
1406795532-001-0000000000
...
1406795532-001-9999999998
1406795532-001-9999999999
1406795532-002-0000000000
...
1406795532-002-9999999999
1406795532-003-0000000000
...
1406795532-998-9999999999
```