remove vhost-elasticsearch-proxy.conf & update changelog
Merge pull request #11 from ministryofjustice/is_loadbalanced

work with loadbalancer (seamlessly)
log X-Request-ID
log request id in old format when used
Merge pull request #12 from ministryofjustice/x_request_id

log X-Request-ID
Changelog v2.0.1
swapping for msec timestamps because iso8601 sucks

on Nginx timestamp precision:
timestamp_iso8601	  	2014-07-10T10:32:10+00:00
timestamp_msec	  	1404988330.617
changelog