Fix Python 2 issue in "fill" image operation
Fix Python 2 issue in "fill" image operation

mikedingjan/wagtail,wagtail/wagtail,nrsimha/wagtail,Toshakins/wagtail,rsalmaso/wagtail,gasman/wagtail,nrsimha/wagtail,nealtodd/wagtail,JoshBarr/wagtail,quru/wagtail,Klaudit/wagtail,mikedingjan/wagtail,hanpama/wagtail,iansprice/wagtail,rsalmaso/wagtail,Tivix/wagtail,rjsproxy/wagtail,takeshineshiro/wagtail,nutztherookie/wagtail,kurtrwall/wagtail,Pennebaker/wagtail,JoshBarr/wagtail,jnns/wagtail,torchbox/wagtail,thenewguy/wagtail,kaedroho/wagtail,nimasmi/wagtail,hanpama/wagtail,torchbox/wagtail,kurtw/wagtail,iansprice/wagtail,kaedroho/wagtail,gasman/wagtail,quru/wagtail,Toshakins/wagtail,chrxr/wagtail,rjsproxy/wagtail,jnns/wagtail,mixxorz/wagtail,gasman/wagtail,Klaudit/wagtail,JoshBarr/wagtail,tangentlabs/wagtail,takeflight/wagtail,FlipperPA/wagtail,takeshineshiro/wagtail,gogobook/wagtail,mayapurmedia/wagtail,hamsterbacke23/wagtail,inonit/wagtail,takeflight/wagtail,hanpama/wagtail,mixxorz/wagtail,nilnvoid/wagtail,chrxr/wagtail,timorieber/wagtail,Pennebaker/wagtail,Pennebaker/wagtail,kurtrwall/wagtail,takeflight/wagtail,Tivix/wagtail,inonit/wagtail,jnns/wagtail,nilnvoid/wagtail,thenewguy/wagtail,mixxorz/wagtail,nimasmi/wagtail,nimasmi/wagtail,quru/wagtail,inonit/wagtail,davecranwell/wagtail,Pennebaker/wagtail,kurtrwall/wagtail,mjec/wagtail,zerolab/wagtail,serzans/wagtail,hamsterbacke23/wagtail,timorieber/wagtail,tangentlabs/wagtail,zerolab/wagtail,kaedroho/wagtail,JoshBarr/wagtail,mixxorz/wagtail,nimasmi/wagtail,Klaudit/wagtail,mjec/wagtail,Tivix/wagtail,tangentlabs/wagtail,inonit/wagtail,nrsimha/wagtail,nilnvoid/wagtail,timorieber/wagtail,serzans/wagtail,takeflight/wagtail,zerolab/wagtail,torchbox/wagtail,rjsproxy/wagtail,davecranwell/wagtail,hanpama/wagtail,wagtail/wagtail,rsalmaso/wagtail,thenewguy/wagtail,WQuanfeng/wagtail,WQuanfeng/wagtail,nutztherookie/wagtail,mjec/wagtail,mayapurmedia/wagtail,mikedingjan/wagtail,zerolab/wagtail,mjec/wagtail,mayapurmedia/wagtail,rsalmaso/wagtail,thenewguy/wagtail,timorieber/wagtail,nutztherookie/wagtail,FlipperPA/wagtail,WQuanfeng/wagtail,hamsterbacke23/wagtail,kurtw/wagtail,davecranwell/wagtail,takeshineshiro/wagtail,thenewguy/wagtail,Toshakins/wagtail,Tivix/wagtail,gogobook/wagtail,Toshakins/wagtail,wagtail/wagtail,rsalmaso/wagtail,torchbox/wagtail,nutztherookie/wagtail,gogobook/wagtail,kaedroho/wagtail,takeshineshiro/wagtail,kurtw/wagtail,WQuanfeng/wagtail,tangentlabs/wagtail,nealtodd/wagtail,gasman/wagtail,kurtw/wagtail,wagtail/wagtail,iansprice/wagtail,serzans/wagtail,jnns/wagtail,kurtrwall/wagtail,chrxr/wagtail,wagtail/wagtail,gogobook/wagtail,serzans/wagtail,zerolab/wagtail,mixxorz/wagtail,iansprice/wagtail,nealtodd/wagtail,mayapurmedia/wagtail,Klaudit/wagtail,quru/wagtail,davecranwell/wagtail,hamsterbacke23/wagtail,nrsimha/wagtail,FlipperPA/wagtail,gasman/wagtail,FlipperPA/wagtail,kaedroho/wagtail,mikedingjan/wagtail,rjsproxy/wagtail,chrxr/wagtail,nealtodd/wagtail,nilnvoid/wagtail