Move all Metrics to Columns folder.

core/DataTable/Filter/AddColumnsProcessedMetrics.php

core/DataTable/Filter/AddColumnsProcessedMetricsGoal.php

core/DataTable/Filter/CalculateEvolutionFilter.php

plugins/Actions/API.php

...ins/Actions/Columns/Metrics/AveragePageGenerationTime.php

plugins/Actions/Columns/Metrics/AverageTimeOnPage.php

plugins/Actions/Columns/Metrics/BounceRate.php

plugins/Actions/Columns/Metrics/ExitRate.php

plugins/Actions/Reports/Get.php

plugins/Actions/Reports/GetEntryPageTitles.php

plugins/Actions/Reports/GetEntryPageUrls.php

plugins/Actions/Reports/GetExitPageTitles.php

plugins/Actions/Reports/GetExitPageUrls.php

plugins/Actions/Reports/GetPageTitles.php

plugins/Actions/Reports/GetPageTitlesFollowingSiteSearch.php

plugins/Actions/Reports/GetPageUrls.php

plugins/Actions/Reports/GetSiteSearchKeywords.php

plugins/Actions/Reports/GetSiteSearchNoResultKeywords.php

plugins/Contents/Columns/Metrics/InteractionRate.php

plugins/Contents/Reports/GetContentNames.php