Fix: cancelDownloading overzooming id
Fix: cancelDownloading overzooming id

- previously overzoomed id was not considered for raster datasources when canceling a url request.

cleeus/tangram-es,quitejonny/tangram-es,quitejonny/tangram-es,cleeus/tangram-es,quitejonny/tangram-es,tangrams/tangram-es,tangrams/tangram-es,tangrams/tangram-es,cleeus/tangram-es,tangrams/tangram-es,quitejonny/tangram-es,tangrams/tangram-es,cleeus/tangram-es,cleeus/tangram-es,tangrams/tangram-es,quitejonny/tangram-es,cleeus/tangram-es,quitejonny/tangram-es,tangrams/tangram-es