3.13.5-rc2

to test the auto updater after matomo-org#15770

Always purge today & yesterday and add update for 3.13.5 (matomo-org#…

…15832)

* Always purge today/yesterday when running invalidated archive purge task and add update to add all tables to purge for next version.

* Add some comments.

* Only add dates if they are past 2020-03.

* Only add tables above 2020-01.