Add test for overriding edit handler heading
Add test for overriding edit handler heading

gasman/wagtail,thenewguy/wagtail,zerolab/wagtail,wagtail/wagtail,rsalmaso/wagtail,kaedroho/wagtail,gasman/wagtail,rsalmaso/wagtail,thenewguy/wagtail,mixxorz/wagtail,jnns/wagtail,kaedroho/wagtail,thenewguy/wagtail,FlipperPA/wagtail,mixxorz/wagtail,wagtail/wagtail,zerolab/wagtail,mixxorz/wagtail,gasman/wagtail,jnns/wagtail,FlipperPA/wagtail,mixxorz/wagtail,zerolab/wagtail,torchbox/wagtail,gasman/wagtail,kaedroho/wagtail,rsalmaso/wagtail,kaedroho/wagtail,takeflight/wagtail,wagtail/wagtail,rsalmaso/wagtail,torchbox/wagtail,mixxorz/wagtail,jnns/wagtail,takeflight/wagtail,zerolab/wagtail,takeflight/wagtail,zerolab/wagtail,jnns/wagtail,gasman/wagtail,wagtail/wagtail,FlipperPA/wagtail,thenewguy/wagtail,FlipperPA/wagtail,torchbox/wagtail,torchbox/wagtail,thenewguy/wagtail,takeflight/wagtail,wagtail/wagtail,rsalmaso/wagtail,kaedroho/wagtail