fix error table log_visit is already joined in https://github.com/piwik/plugin-CustomDimensions/pull/19

This reverts commit 745c6c6d.

fix system tests and fix an error where we did not pass the correct siteId when saving measurable settings

Update Formatter.php

Update Formatter.php

Made changes in the coding style, added translation for 'days'.

Update FormatterTest.php

Made some changes in the expected array.

Update Formatter.php

Code style.

Made the last seen time more human readable by incorporating days in the time format.

fixed notice

This hopefully fixes the build after https://github.com/piwik/plugin-AnonymousPiwikUsageMeasurement/pull/24

we need tests to have deterministic 'idsubdatatable'