Recompile node-xmpp at current version. Fix XMLHTTPRequest bug.
Merge branch 'master' into oauth

* master:
  Recompile node-xmpp at current version. Fix XMLHTTPRequest bug.

Obviates the need for the temporary hacks in
https://github.com/UWNetworksLab/UProxy/commit/b1154b121#diff-0
remove some no longer needed temporary hacks as of 552295c4

(see https://github.com/UWNetworksLab/UProxy/commit/b1154b121#diff-0)