set specific version of South / Wagtail in preparation for 1.6 upgrade
set specific version of South / Wagtail in preparation for 1.6 upgrade

kaedroho/wagtaildemo,dudunato/ywam-cerrado,lincolnloop/wagtaildemo,dudunato/ywam-cerrado,jmcarp/wagtaildemo,jmcarp/wagtaildemo,jmcarp/wagtaildemo,kaedroho/wagtaildemo,kaedroho/wagtaildemo,ThibWeb/wagtaildemo,dudunato/ywam-cerrado,gasman/wagtaildemo,torchbox/wagtailapidemo,kaedroho/wagtaildemo,dudunato/ywam-cerrado,torchbox/wagtailapidemo,gasman/wagtaildemo,ThibWeb/wagtaildemo,torchbox/wagtailapidemo,torchbox/wagtaildemo,jmcarp/wagtaildemo,torchbox/wagtaildemo,lincolnloop/wagtaildemo,torchbox/wagtaildemo,ThibWeb/wagtaildemo,ThibWeb/wagtaildemo,lincolnloop/wagtaildemo,gasman/wagtaildemo,torchbox/wagtaildemo,torchbox/wagtailapidemo,lincolnloop/wagtaildemo,gasman/wagtaildemo