match our codemirror setings on rsh a bit better
match our codemirror setings on rsh a bit better

nteract/nteract,jdfreder/nteract,captainsafia/nteract,nteract/nteract,jdfreder/nteract,jdetle/nteract,rgbkrk/nteract,rgbkrk/nteract,jdetle/nteract,captainsafia/nteract,nteract/composition,nteract/nteract,nteract/composition,nteract/composition,rgbkrk/nteract,nteract/nteract,rgbkrk/nteract,jdetle/nteract,jdfreder/nteract,captainsafia/nteract,captainsafia/nteract,jdfreder/nteract,nteract/nteract,rgbkrk/nteract,jdetle/nteract