Allow up to 512mb body size for file uploads

We might want to make that configurable by the app?

setup/start/nginx/appconfig.ejs

@@ -50,6 +50,8 @@ server {
         proxy_buffers           4 256k;
         proxy_busy_buffers_size 256k;
 
+        client_max_body_size 512m;
+
 <% if ( isAdmin === true ) { %>
         location /api/ {
             proxy_pass   http://127.0.0.1:3000;