Added test for preview on create
Added test for preview on create

benjaoming/wagtail,Toshakins/wagtail,kaedroho/wagtail,torchbox/wagtail,helenwarren/pied-wagtail,rsalmaso/wagtail,wagtail/wagtail,zerolab/wagtail,darith27/wagtail,rsalmaso/wagtail,mephizzle/wagtail,Klaudit/wagtail,quru/wagtail,nilnvoid/wagtail,takeshineshiro/wagtail,jordij/wagtail,stevenewey/wagtail,stevenewey/wagtail,jorge-marques/wagtail,tangentlabs/wagtail,rv816/wagtail,willcodefortea/wagtail,Tivix/wagtail,takeflight/wagtail,jordij/wagtail,chimeno/wagtail,timorieber/wagtail,takeflight/wagtail,inonit/wagtail,nimasmi/wagtail,FlipperPA/wagtail,mayapurmedia/wagtail,jordij/wagtail,mephizzle/wagtail,benemery/wagtail,darith27/wagtail,bjesus/wagtail,mayapurmedia/wagtail,mjec/wagtail,lojack/wagtail,thenewguy/wagtail,FlipperPA/wagtail,mjec/wagtail,kurtw/wagtail,kurtrwall/wagtail,Toshakins/wagtail,nilnvoid/wagtail,benemery/wagtail,willcodefortea/wagtail,chrxr/wagtail,hamsterbacke23/wagtail,nutztherookie/wagtail,jorge-marques/wagtail,kaedroho/wagtail,takeflight/wagtail,iansprice/wagtail,nutztherookie/wagtail,WQuanfeng/wagtail,gogobook/wagtail,thenewguy/wagtail,kurtrwall/wagtail,benemery/wagtail,mixxorz/wagtail,inonit/wagtail,iho/wagtail,WQuanfeng/wagtail,Tivix/wagtail,takeshineshiro/wagtail,thenewguy/wagtail,chimeno/wagtail,thenewguy/wagtail,tangentlabs/wagtail,janusnic/wagtail,jorge-marques/wagtail,rsalmaso/wagtail,KimGlazebrook/wagtail-experiment,nealtodd/wagtail,inonit/wagtail,dresiu/wagtail,wagtail/wagtail,iho/wagtail,JoshBarr/wagtail,100Shapes/wagtail,marctc/wagtail,Pennebaker/wagtail,nimasmi/wagtail,gasman/wagtail,takeflight/wagtail,kaedroho/wagtail,quru/wagtail,WQuanfeng/wagtail,gasman/wagtail,dresiu/wagtail,kaedroho/wagtail,mixxorz/wagtail,zerolab/wagtail,hanpama/wagtail,gasman/wagtail,takeshineshiro/wagtail,chrxr/wagtail,kurtw/wagtail,benjaoming/wagtail,nrsimha/wagtail,hanpama/wagtail,mjec/wagtail,jnns/wagtail,iansprice/wagtail,gogobook/wagtail,dresiu/wagtail,jnns/wagtail,nrsimha/wagtail,dresiu/wagtail,mikedingjan/wagtail,janusnic/wagtail,jorge-marques/wagtail,lojack/wagtail,taedori81/wagtail,jnns/wagtail,FlipperPA/wagtail,KimGlazebrook/wagtail-experiment,rjsproxy/wagtail,nilnvoid/wagtail,Pennebaker/wagtail,rsalmaso/wagtail,timorieber/wagtail,nutztherookie/wagtail,kaedroho/wagtail,rv816/wagtail,Klaudit/wagtail,serzans/wagtail,marctc/wagtail,100Shapes/wagtail,taedori81/wagtail,chimeno/wagtail,hamsterbacke23/wagtail,kurtrwall/wagtail,davecranwell/wagtail,rjsproxy/wagtail,hanpama/wagtail,Tivix/wagtail,benjaoming/wagtail,m-sanders/wagtail,100Shapes/wagtail,timorieber/wagtail,hanpama/wagtail,mjec/wagtail,gogobook/wagtail,rjsproxy/wagtail,willcodefortea/wagtail,torchbox/wagtail,nutztherookie/wagtail,chimeno/wagtail,mixxorz/wagtail,davecranwell/wagtail,benjaoming/wagtail,timorieber/wagtail,bjesus/wagtail,tangentlabs/wagtail,inonit/wagtail,kurtrwall/wagtail,mixxorz/wagtail,mixxorz/wagtail,Tivix/wagtail,kurtw/wagtail,iho/wagtail,tangentlabs/wagtail,iansprice/wagtail,m-sanders/wagtail,gogobook/wagtail,darith27/wagtail,janusnic/wagtail,Toshakins/wagtail,darith27/wagtail,quru/wagtail,Klaudit/wagtail,mayapurmedia/wagtail,nealtodd/wagtail,KimGlazebrook/wagtail-experiment,zerolab/wagtail,chimeno/wagtail,gasman/wagtail,Klaudit/wagtail,mikedingjan/wagtail,nealtodd/wagtail,jordij/wagtail,davecranwell/wagtail,zerolab/wagtail,zerolab/wagtail,stevenewey/wagtail,iho/wagtail,nimasmi/wagtail,jnns/wagtail,taedori81/wagtail,taedori81/wagtail,rsalmaso/wagtail,torchbox/wagtail,wagtail/wagtail,kurtw/wagtail,serzans/wagtail,mephizzle/wagtail,mephizzle/wagtail,gasman/wagtail,marctc/wagtail,nrsimha/wagtail,helenwarren/pied-wagtail,FlipperPA/wagtail,JoshBarr/wagtail,serzans/wagtail,quru/wagtail,thenewguy/wagtail,Pennebaker/wagtail,hamsterbacke23/wagtail,wagtail/wagtail,benemery/wagtail,KimGlazebrook/wagtail-experiment,JoshBarr/wagtail,Pennebaker/wagtail,willcodefortea/wagtail,nimasmi/wagtail,mikedingjan/wagtail,mikedingjan/wagtail,takeshineshiro/wagtail,chrxr/wagtail,marctc/wagtail,chrxr/wagtail,WQuanfeng/wagtail,rjsproxy/wagtail,jorge-marques/wagtail,stevenewey/wagtail,nilnvoid/wagtail,wagtail/wagtail,nealtodd/wagtail,bjesus/wagtail,helenwarren/pied-wagtail,m-sanders/wagtail,lojack/wagtail,nrsimha/wagtail,rv816/wagtail,torchbox/wagtail,taedori81/wagtail,m-sanders/wagtail,bjesus/wagtail,davecranwell/wagtail,Toshakins/wagtail,rv816/wagtail,JoshBarr/wagtail,janusnic/wagtail,dresiu/wagtail,iansprice/wagtail,hamsterbacke23/wagtail,mayapurmedia/wagtail,serzans/wagtail