Travis: Initiating build for commit 'dc5c3efc80d31a44a0ad00fc0199dcf20a20e146' on branch 'master': Merge pull request #6825 from piwik/iis_advanced_log_importing

Added IIS advanced log importing support, netscaler log importing support, support for cs-username IIS log field and time-taken IIS log field to log importer script.