add another unit test for nested streamfields
add another unit test for nested streamfields

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