Issue #2572613 by Malevi4, idebr, pfrenssen, Mile23, RajeevK: Fix 'Drupal.Array.Array.CommaLastItem' coding standard

Issue #2784921 by amateescu, timmillwood, pk188, plach, catch, Fabianx, dixon_, dawehner, borisson_, Sam152, yoroy, webchick, phenaproxima, larowlan: Add Workspaces experimental module