Theatrical hell-raisers and the art world's enfants terrible take centre stage in our roundup of the biggest risk-takers of 2014TheatreOh! What a Lovely WarTheatre-maker Joan Littlewood was a visionary, an iconoclast and a subversive. Her 1963 "documentary collage" about the bitter ironies of the first world war was way ahead of its time, using popular period song and hard-hitting testimony. Lyn Gardner Theatre Royal…
