Fix DeprecationWarning
Fix DeprecationWarning

``django.utils.importlib`` will be removed in Django 1.9. This causes a ``DeprecationWarning`` to be raised for Django 1.8 users.
nilnvoid/wagtail,wagtail/wagtail,kurtw/wagtail,wagtail/wagtail,iansprice/wagtail,nilnvoid/wagtail,jnns/wagtail,hamsterbacke23/wagtail,serzans/wagtail,iansprice/wagtail,torchbox/wagtail,takeflight/wagtail,kurtw/wagtail,chrxr/wagtail,zerolab/wagtail,serzans/wagtail,mixxorz/wagtail,FlipperPA/wagtail,thenewguy/wagtail,quru/wagtail,gasman/wagtail,Toshakins/wagtail,FlipperPA/wagtail,kurtw/wagtail,kaedroho/wagtail,chrxr/wagtail,quru/wagtail,kaedroho/wagtail,timorieber/wagtail,serzans/wagtail,davecranwell/wagtail,nealtodd/wagtail,Tivix/wagtail,kurtrwall/wagtail,zerolab/wagtail,hanpama/wagtail,Tivix/wagtail,thenewguy/wagtail,timorieber/wagtail,hanpama/wagtail,Toshakins/wagtail,kaedroho/wagtail,davecranwell/wagtail,Tivix/wagtail,chrxr/wagtail,kurtrwall/wagtail,jnns/wagtail,timorieber/wagtail,JoshBarr/wagtail,davecranwell/wagtail,mixxorz/wagtail,wagtail/wagtail,gasman/wagtail,hamsterbacke23/wagtail,takeflight/wagtail,kaedroho/wagtail,hamsterbacke23/wagtail,nealtodd/wagtail,zerolab/wagtail,thenewguy/wagtail,Tivix/wagtail,Toshakins/wagtail,FlipperPA/wagtail,nimasmi/wagtail,gogobook/wagtail,nealtodd/wagtail,gogobook/wagtail,rsalmaso/wagtail,serzans/wagtail,quru/wagtail,gogobook/wagtail,nilnvoid/wagtail,torchbox/wagtail,mikedingjan/wagtail,chrxr/wagtail,zerolab/wagtail,timorieber/wagtail,thenewguy/wagtail,inonit/wagtail,torchbox/wagtail,hanpama/wagtail,mixxorz/wagtail,kurtrwall/wagtail,nutztherookie/wagtail,mixxorz/wagtail,mikedingjan/wagtail,kurtw/wagtail,rsalmaso/wagtail,gasman/wagtail,JoshBarr/wagtail,hanpama/wagtail,mixxorz/wagtail,zerolab/wagtail,hamsterbacke23/wagtail,jnns/wagtail,rsalmaso/wagtail,nimasmi/wagtail,davecranwell/wagtail,JoshBarr/wagtail,torchbox/wagtail,gasman/wagtail,quru/wagtail,jnns/wagtail,Toshakins/wagtail,wagtail/wagtail,nealtodd/wagtail,iansprice/wagtail,kaedroho/wagtail,takeflight/wagtail,nimasmi/wagtail,nimasmi/wagtail,FlipperPA/wagtail,takeflight/wagtail,inonit/wagtail,kurtrwall/wagtail,nilnvoid/wagtail,wagtail/wagtail,nutztherookie/wagtail,mikedingjan/wagtail,JoshBarr/wagtail,rsalmaso/wagtail,inonit/wagtail,iansprice/wagtail,mikedingjan/wagtail,inonit/wagtail,thenewguy/wagtail,gogobook/wagtail,nutztherookie/wagtail,nutztherookie/wagtail,rsalmaso/wagtail,gasman/wagtail