Fixing more tests.

core/DataTable/Filter/CalculateEvolutionFilter.php

plugins/Contents/Reports/GetContentNames.php

plugins/Contents/Reports/GetContentPieces.php

...ystem/expected/test_Contents__Actions.getPageUrls_day.xml

...tem/expected/test_Contents__Actions.getPageUrls_month.xml

plugins/CoreHome/Metrics/EvolutionMetric.php

...xamplePlugin/tests/System/expected/test___API.get_day.xml

plugins/Insights/DataTable/Filter/Insight.php

plugins/Insights/tests/Integration/ApiTest.php

...ts_Events.getAction_lastN__API.getProcessedReport_day.xml

..._Events.getCategory_lastN__API.getProcessedReport_day.xml

...ents_Events.getName_lastN__API.getProcessedReport_day.xml

..._only__ScheduledReports.generateReport_month.original.pdf

.../test_apiGetReportMetadata__API.getReportMetadata_day.xml

..._only__ScheduledReports.generateReport_week.original.html