bp: better card number detection
bp: better card number detection

RouxRC/weboob,sputnick-dev/weboob,RouxRC/weboob,willprice/weboob,nojhan/weboob-devel,nojhan/weboob-devel,RouxRC/weboob,willprice/weboob,sputnick-dev/weboob,sputnick-dev/weboob,nojhan/weboob-devel,willprice/weboob