Fixes #6599 do not proceed if the row does not yet have the visits value - hopefully this doesnt fail any test
Updating UI test submodule to latest.
fixes #6680 this must be a bug on some 5.3.x that private methods can't be called in closures
Change two logs in PluginsArchiver.php to use verbose level since they can result in a lot of log entries.
improved assertion
Merge pull request #11 from piwik/master

patch it up