Auto identifying an user on first event track

Signed-off-by: Miguel M. Almeida <miguelcma@CMA-Retina.local>
Changing names of error messages levels

* kLQLogLevelDataPoint -> kLQLogLevelInfo
* kLQLogLevelEvent -> kLQLogLevelInfoVerbose

Signed-off-by: Miguel M. Almeida <miguelcma@CMA-Retina.local>