first step towards new log with transaction id in logfile

### Description
First step towards new log file format
  - removed verbose (rest requests still to be removed)
  - new layout of the lines in the log file
  - transactionId stored and made part of the log file

At the end, we live we have two variables (startTime and logStartTime.tv_sec) for the same thing... Not too smart, but I think we can live with it by the moment :)

Additionaly, a new issue could be created for this, if you think is a good idea.

NTC