Update download url in nginx
Update download url in nginx

If you are not using a subdomain like `biocache-ws.hello.com` but you are using a context-path like `data.hello.com/biocache-ws`, on line 229 "/biocache-download" will failed
AtlasOfLivingAustralia/ala-install,AtlasOfLivingAustralia/ala-install,AtlasOfLivingAustralia/ala-install,AtlasOfLivingAustralia/ala-install,AtlasOfLivingAustralia/ala-install