mod_http_oauth2: Reduce authorization code validity time to 2 minutes RFC 6749 states > A maximum authorization code lifetime of 10 minutes is RECOMMENDED. So 15 minutes was way too long. I was thinking 5 minutes at first but since this should generally be instant, I settled on 2 minutes as a large guesstimate on how slow it might be on slow links.

This module helps make BOSH and WebSocket connection endpoints
discoverable via the HTTP method described in
[XEP-0156](https://xmpp.org/extensions/xep-0156.html#http).