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?
Try
```
var contentDiv = doc.getElementById('xaver_component_Text_0');
if (contentDiv) {
	Z.monitorDOMChanges(contentDiv, {childList: true});
}
```
Basically, means attach a [Mutation observer](https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver) to the contentDiv and look for changes (additions/deletions) to it's children (not grandchildren). See [here](https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver#MutationObserverInit) for other configuration parameters you can use. You want to be as conservative as possible, only trigger when your content changes. Try to monitor events that happen once (e.g. sometimes if you're monitoring node attributes, those may change several times during the page transition, which fires detectWeb a lot of times.