Yesterday I called the Bier-Kwik hotline again. As reported before, I was a little bit afraid of the amount of sediments settling out in the bottle. Did I wait too shortly before bottling the beer? Was the primary fermentation still active? Did we work carelessly? Shall I decant the beer once again? And finally: Can I still drink that stuff?
The friendly madam on the phone allayed my doubts. The beer is of course still fermenting (second phase) and causes therefore the creation of the debris. Even if the amount is considerably high, the beer is still drinkable. In fact, this debris (containing the residua of the yeast and other airborne particles) is kind of healthy! So I can decide whether I want to shake the bottle before drinking or not… 
Her statements were finally proved by the last litre of beer I still hadn’t bottled yet (after more than 7 days of primary fermentation). This time I was extremely careful and most of the sediment remained in the jug. But still, after some hours I saw a layer of debris at the bottom of the bottle. This seems to be fully normal. And I somehow have the feeling that the beer is getting clearer and clearer. Jättebra!
Na dann kann ich ja heut beruhigt einschlafen…