Added a post-update handler to activate a migrated v4 pack
Added a post-update handler to activate a migrated v4 pack

jinshana/kajonacms,jinshana/kajonacms,artemeon/core,jinshana/kajonacms,jinshana/kajonacms,kajona/kajonacms,artemeon/core,jinshana/kajonacms,jinshana/kajonacms,artemeon/core,artemeon/core,kajona/kajonacms,artemeon/core,kajona/kajonacms,kajona/kajonacms