Fixed bug in utils/CDateTimeParser class.

Bug description:
When parsing date using date format with month abbreviation that ends by dot (for example, "d MMM y" for 'fr' locale), "parse" method fails because dot at end of month name not returning by method "parseMonth"  in variable $monthName. As a result, lentgh of month name is incorrect and method "parse" fails.
Method "parse" not parse year when year setted by single letter "y" (for example, 'fr' locale, medium date format). Such date format must be parsed and return 4-digit year.