edit a blog e2e tests: check updated date
edit a blog e2e tests: check updated date

ancafarcas/liveblog,darconny/liveblog,liveblog/liveblog,superdesk/liveblog,hlmnrmr/liveblog,hlmnrmr/liveblog,hlmnrmr/liveblog,liveblog/liveblog,ancafarcas/liveblog,liveblog/liveblog,darconny/liveblog,ancafarcas/liveblog,ancafarcas/liveblog,hlmnrmr/liveblog,liveblog/liveblog,liveblog/liveblog,superdesk/liveblog,superdesk/liveblog,superdesk/liveblog,darconny/liveblog,darconny/liveblog