Allow file uploads up to 4 GB

conf/nginx/nginx

@@ -24,7 +24,7 @@ server {
     include includes/ssl;
     include includes/server-name;
 
-    client_max_body_size 2048m;
+    client_max_body_size 4096m;
 
     access_log /var/log/nginx-access.log;
     error_log /var/log/nginx-error.log;