Fix WidgetWithScript to accept renderer kwarg
Fix WidgetWithScript to accept renderer kwarg

nealtodd/wagtail,zerolab/wagtail,nealtodd/wagtail,FlipperPA/wagtail,mixxorz/wagtail,kaedroho/wagtail,kaedroho/wagtail,zerolab/wagtail,rsalmaso/wagtail,mikedingjan/wagtail,gasman/wagtail,mixxorz/wagtail,nimasmi/wagtail,jnns/wagtail,thenewguy/wagtail,torchbox/wagtail,timorieber/wagtail,torchbox/wagtail,torchbox/wagtail,gasman/wagtail,rsalmaso/wagtail,kaedroho/wagtail,thenewguy/wagtail,mikedingjan/wagtail,wagtail/wagtail,wagtail/wagtail,nealtodd/wagtail,wagtail/wagtail,zerolab/wagtail,FlipperPA/wagtail,mikedingjan/wagtail,thenewguy/wagtail,gasman/wagtail,gasman/wagtail,mixxorz/wagtail,jnns/wagtail,takeflight/wagtail,zerolab/wagtail,wagtail/wagtail,takeflight/wagtail,nimasmi/wagtail,FlipperPA/wagtail,rsalmaso/wagtail,zerolab/wagtail,nealtodd/wagtail,timorieber/wagtail,takeflight/wagtail,mixxorz/wagtail,nimasmi/wagtail,rsalmaso/wagtail,wagtail/wagtail,timorieber/wagtail,jnns/wagtail,nimasmi/wagtail,mikedingjan/wagtail,jnns/wagtail,FlipperPA/wagtail,gasman/wagtail,kaedroho/wagtail,thenewguy/wagtail,timorieber/wagtail,thenewguy/wagtail,torchbox/wagtail,kaedroho/wagtail,takeflight/wagtail,rsalmaso/wagtail,mixxorz/wagtail