Merge pull request #7336 from piwik/fast_flatten_2

core/API/DataTableManipulator/Flattener.php

core/API/DataTableManipulator/ReportTotalsCalculator.php

core/API/DataTablePostProcessor.php

core/Archive.php

core/DataTable.php

core/DataTable/Filter/ColumnCallbackAddColumn.php

core/DataTable/Filter/Sort.php

core/DataTable/Filter/Truncate.php

core/DataTable/Map.php

core/DataTable/Row.php

core/Plugin/API.php

core/Plugin/Metric.php

core/Plugin/Report.php

core/UrlHelper.php

plugins/Actions/API.php

plugins/Actions/DataTable/Filter/Actions.php

plugins/Actions/Reports/Base.php

plugins/CoreHome/Columns/Metrics/CallableProcessedMetric.php

plugins/Events/API.php

plugins/Events/DataTable/Filter/ReplaceEventNameNotSet.php