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

Fixing build for merge and move IIS check for --w3c-time-taken-milli to Parser.check_format so only one warning outputted.

Adding support for parsing amazon cloudfront log files in log importer & making W3cExtendedFormat treat time-taken field as seconds by default (since that is what the W3C format specifies). Also add support for event tracking and cloudfront RTMP logs (which provide event logs). Also allow multiple spaces in between W3C extended log files. Allow derived classes of W3cExtendedFormat to define new custom field regexes.

Do not create new visit if no referrer info in current action, but referrer info present in last action. Also add integration + system tests for new behavior.

Refs #5980, parse cs-username variable in IIS logs and use as userid when present and not anonymous. Includes changes to ImportLogsTest.

Refs #6795, add --iis-map-field option to allow users of log importer script to parse log files created using the IIS Advanced Logging module. Includes tests for such a case (including python unit test + PHP System test).

Fix regression in MultiSites w/ regard to master, make sure orders_evolution and ecommerce_revenue_evolution are not present if ecommerce is not enabled for the site.

Fix API.getProcessedReport output for site search reports (do not display certain processed metrics in reports).

Do not display avg_order_revenue in processed reports for Goals.get w/ idGoal set to ecommerce goal.

a visitor now has a browser, browser name and browser version attribute, so it's clear what it's containing.

Fixing more tests and moving API.get metadata away from top for API.getReportMetadata list so MultiSites reports are first displayed.