[Arte] retrieve default quality if requested quality does not exist
[Arte] retrieve default quality if requested quality does not exist

willprice/weboob,yannrouillard/weboob,Konubinix/weboob,nojhan/weboob-devel,laurent-george/weboob,RouxRC/weboob,willprice/weboob,Boussadia/weboob,sputnick-dev/weboob,frankrousseau/weboob,nojhan/weboob-devel,Konubinix/weboob,sputnick-dev/weboob,yannrouillard/weboob,yannrouillard/weboob,laurent-george/weboob,Boussadia/weboob,sputnick-dev/weboob,RouxRC/weboob,Boussadia/weboob,RouxRC/weboob,frankrousseau/weboob,frankrousseau/weboob,Boussadia/weboob,nojhan/weboob-devel,willprice/weboob,Konubinix/weboob,laurent-george/weboob