Improve validation and reporting of the validator.
- Rearranged (to separate loading of data file) _get_sevent_history functions.
- Move AlertConditions to the separate file 'alert_conditions.py'
- Added class method _validate_number_of_alerts(self) that validate the # of xml alerts
- Rename MDC checks and plot in pdf style instead of png
- Get SNR of the events
- Fix a bug to have all latency referred to t_0
Edited by Roberto DePietri