Lots of bugs fixed :
- Name of the worker is stripped from ',' char (yeah, I know, who would write something like "John,"... in fact, someone did)
- Day with only "-" in it is now treated as a special day (not working day)
- Day with "6H" instead of "6H00" are now safe
- Day with a trouble in hours (example above) won't cause a FATAL ERROR : instead an error is set and the day has no hours specified
- Fixing a bug in finding current year (and use of DateTime instead of date)