OSMReader: improve the osm tags handling for bike
OSMReader: improve the osm tags handling for bike

there was some mistakes in the parse of the osm tags (and still are, we
should take a closer look to this)

now we cannot take a bike on a footway is not specificly specified

stifoon/navitia,Tisseo/navitia,patochectp/navitia,kinnou02/navitia,CanalTP/navitia,Tisseo/navitia,francois-vincent/navitia,pbougue/navitia,djludo/navitia,lrocheWB/navitia,thiphariel/navitia,fueghan/navitia,frodrigo/navitia,kinnou02/navitia,fueghan/navitia,Tisseo/navitia,lrocheWB/navitia,VincentCATILLON/navitia,CanalTP/navitia,xlqian/navitia,francois-vincent/navitia,patochectp/navitia,prhod/navitia,xlqian/navitia,pbougue/navitia,frodrigo/navitia,is06/navitia,VincentCATILLON/navitia,prhod/navitia,TeXitoi/navitia,CanalTP/navitia,thiphariel/navitia,pbougue/navitia,kinnou02/navitia,is06/navitia,xlqian/navitia,is06/navitia,thiphariel/navitia,Tisseo/navitia,francois-vincent/navitia,stifoon/navitia,patochectp/navitia,CanalTP/navitia,francois-vincent/navitia,datanel/navitia,CanalTP/navitia,TeXitoi/navitia,frodrigo/navitia,antoine-de/navitia,datanel/navitia,kadhikari/navitia,TeXitoi/navitia,xlqian/navitia,djludo/navitia,kadhikari/navitia,TeXitoi/navitia,datanel/navitia,fueghan/navitia,prhod/navitia,Tisseo/navitia,VincentCATILLON/navitia,lrocheWB/navitia,djludo/navitia,antoine-de/navitia,patochectp/navitia,kadhikari/navitia,datanel/navitia,ballouche/navitia,djludo/navitia,prhod/navitia,antoine-de/navitia,ballouche/navitia,frodrigo/navitia,lrocheWB/navitia,pbougue/navitia,is06/navitia,ballouche/navitia,xlqian/navitia,kinnou02/navitia,stifoon/navitia,kadhikari/navitia,fueghan/navitia,ballouche/navitia,stifoon/navitia,thiphariel/navitia,antoine-de/navitia,VincentCATILLON/navitia