FIX: old usage of facet_grid in old manual tests
FIX: old usage of facet_grid in old manual tests

Cophy08/ggplot,ricket1978/ggplot,benslice/ggplot,ricket1978/ggplot,smblance/ggplot,eco32i/ggplot,udacity/ggplot,bitemyapp/ggplot,assad2012/ggplot,kmather73/ggplot,xguse/ggplot,andnovar/ggplot,wllmtrng/ggplot,benslice/ggplot,xguse/ggplot,mizzao/ggplot,mizzao/ggplot