Add new translator for Bundesgesetzblatt (Federal Law Gazette of Germany...

...)

 * It should be freely available online. Can you access it outside from Germany (see test cases)?
 * I would like to attach the pdf directly to the entry, but it didn't suceed so far (iframe, embedded pdf, ...)
 * The icon seems sometimes not to update. It might just be a dom change and not a real new page load. What was the trick here again?
 * AFAIK the end page is not available.
 * Any other comments?
What page exactly are you testing on? And what do you mean it doesn't change? If you load http://www.bgbl.de/banzxaver/bgbl/start.xav?startbk=Bundesanzeiger_BGBl&jumpTo=bgbl114s1474.pdf and then click on the "Nr. 42 vom 05.09.2014" entry on the left, it goes into multiples and the icon changes to a folder. At least it does so for me with the code I posted above.