Merge pull request #10725 from piwik/events_archive_fix

plugins/Events/Archiver.php

tests/PHPUnit/Fixtures/ThreeVisitsWithCustomEvents.php

tests/PHPUnit/System/CustomEventsTest.php

...nts_Events.getAction_flat__API.getProcessedReport_day.xml

...ts_Events.getAction_lastN__API.getProcessedReport_day.xml

...s_Events.getCategory_flat__API.getProcessedReport_day.xml

..._Events.getCategory_lastN__API.getProcessedReport_day.xml

...vents_Events.getName_flat__API.getProcessedReport_day.xml

...ents_Events.getName_lastN__API.getProcessedReport_day.xml

...expected/test_CustomEvents__Actions.getPageUrls_month.xml

.../System/expected/test_CustomEvents__Actions.get_month.xml

...em/expected/test_CustomEvents__Events.getAction_month.xml

.../expected/test_CustomEvents__Events.getCategory_month.xml

...stem/expected/test_CustomEvents__Events.getName_month.xml

...ed/test_CustomEvents__Live.getLastVisitsDetails_month.xml

...ndaryDimensionIsEventAction__Events.getCategory_month.xml

...secondaryDimensionIsEventAction__Events.getName_month.xml

...ndaryDimensionIsEventCategory__Events.getAction_month.xml

...condaryDimensionIsEventCategory__Events.getName_month.xml

...secondaryDimensionIsEventName__Events.getAction_month.xml