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

That idea might complicate things for unit testing ...
Instead of removing the variable I keep it but I take the value from 'logStartTime'.

This idea might be discussed, but it seems like a good idea to me at this time ... :-)