Date format

2 changes to the `dateFormat.txt` file, one of which requires more implementation. 

And a question:

The test files `dateFormat.txt` and `DDMMSSCoordinatesFormat.txt` are currently `;` separated files. Are these used in automated tests? Because, it would be nice if the file could also be tested directly in the web interface. Something like:

    1987;6;3|3 Jun 1987
    1987;6;3|03 Jun 1987
    2012;12;31|31-12-2012
    null;6;null|Jun

The first column will be interpreted as an ID, and can be used for visual checking, the second column is the date that is parsed.

You can remove the branch `dateFormat` if you no longer need it.