Revert "Fox bug: missing proxy_pass for twisted_hello"

This reverts commit f8452bb6ff5c3a8aef6d11b6503cfd91d337b84d.
Revert "Revert "Fox bug: missing proxy_pass for twisted_hello""

This reverts commit 6cc807a9fc44d0fd887ee6e4dcbfd4ef981b6454.
Revert "Nginx now doing all rewriting of urls (rather than requesting uwsgi do it)."

This reverts commit 2430c81656fe3b87cf36d721c5760a4827fa2056.