Two plays to read. One dusty on the shelf; the other very new, just arrived in the mail. The old is Bernard Shaw’s You Never Can Tell in Plays Pleasant, a collection of four early works. When it was first published in 1898 the close-to-farce comedy hadn’t been performed. Written, said Shaw, to suit popular taste and commercial West End managements, “it was easier to do this than to persuade those who had asked for it that they had indeed got it”. Though it would become one of his most popular and most performed plays, the planned first production had…