Truncated Dates (bday / without years) are not parsed

[sebilasse]

Using truncated representations of dates for birth date is often good practice as noted in the vcard spec http://microformats.org/wiki/h-card#dt-bday

"--12-28"
Apart from citing parecki's birthday from the public h-card (send him much gifts) I'll look into it now for a fix [problem is in the intermediate step we would have to use the year 9999 and replace it afterwards, one reason why I am using a format like in my nlp module ].

Feel free to look into the following PR ...

[sebilasse]

The problem is that it is invalid in JS then.
Maybe we should omit the replace in line 989 and parse it with year '9999' then ...

[sebilasse]

I corrected the PR so that it would be always this year if the date without year is still happening this year and next year if not ...