stable-8044: release

* b212dca web: fix parsing IPv6 reolver addresses
* 53b2654 web: auto-detect nginx resolver
* 9fbb5bd jicofo: fix XMPP config (all moved to jicofo.conf)
* a2333b3 jicofo: remove JICOFO_SHORT_ID (removed upstream)
* d764db9 doc: update README
* c694a9e web: set charset as utf-8
* 8660089 misc: working on unstable