Fixing build failure, 4 distinct metrics no longer appear due to bug fix (distinct referrers are 0, so no metric added).

Fixes #6919, do not check for host in regex group in log importer if format has no regex. Also add nginx json log to log importer system test.

fixed some system tests. the order change of some device reports changed as they have sometimes same orderid and as we moved some ecommerce reports it results in a different order now

refs #6753 uncommenting tests to see whether they fail. Cannot execute them directly as I am using PHP 5.3

fix tests as reports are invalidated now in some tests causing the site creation date to change causing archiving more dates

fixed some integration tests. for example sometimes a converted goal was listed before the actual pageview