Django 1.10: Use new app discovery system.
Django 1.10: Use new app discovery system.

'django.db.models.loading' is removed due to which both
'django.db.models.get_app' and 'django.db.models.get_models' are removed.

See https://docs.djangoproject.com/en/1.10/releases/1.9/#features-removed-in-1-9

verma-varsha/zulip,niftynei/zulip,synicalsyntax/zulip,rht/zulip,timabbott/zulip,eeshangarg/zulip,zulip/zulip,rishig/zulip,andersk/zulip,blaze225/zulip,synicalsyntax/zulip,amyliu345/zulip,christi3k/zulip,samatdav/zulip,shubhamdhama/zulip,cosmicAsymmetry/zulip,susansls/zulip,SmartPeople/zulip,peguin40/zulip,isht3/zulip,verma-varsha/zulip,tommyip/zulip,sharmaeklavya2/zulip,punchagan/zulip,Juanvulcano/zulip,PhilSk/zulip,jrowan/zulip,KingxBanana/zulip,amanharitsh123/zulip,aakash-cr7/zulip,isht3/zulip,vaidap/zulip,rht/zulip,peguin40/zulip,eeshangarg/zulip,susansls/zulip,andersk/zulip,vabs22/zulip,SmartPeople/zulip,PhilSk/zulip,mahim97/zulip,jackrzhang/zulip,jainayush975/zulip,kou/zulip,TigorC/zulip,cosmicAsymmetry/zulip,punchagan/zulip,JPJPJPOPOP/zulip,KingxBanana/zulip,blaze225/zulip,cosmicAsymmetry/zulip,sonali0901/zulip,PhilSk/zulip,zacps/zulip,timabbott/zulip,dhcrzf/zulip,jrowan/zulip,jphilipsen05/zulip,hackerkid/zulip,hackerkid/zulip,showell/zulip,Galexrt/zulip,verma-varsha/zulip,aakash-cr7/zulip,dattatreya303/zulip,dattatreya303/zulip,AZtheAsian/zulip,shubhamdhama/zulip,shubhamdhama/zulip,SmartPeople/zulip,rishig/zulip,rht/zulip,tommyip/zulip,kou/zulip,vabs22/zulip,souravbadami/zulip,Juanvulcano/zulip,grave-w-grave/zulip,brockwhittaker/zulip,zacps/zulip,susansls/zulip,jphilipsen05/zulip,timabbott/zulip,ryanbackman/zulip,jphilipsen05/zulip,mahim97/zulip,samatdav/zulip,Diptanshu8/zulip,sonali0901/zulip,ryanbackman/zulip,mahim97/zulip,verma-varsha/zulip,aakash-cr7/zulip,vabs22/zulip,Galexrt/zulip,isht3/zulip,synicalsyntax/zulip,timabbott/zulip,KingxBanana/zulip,j831/zulip,dhcrzf/zulip,joyhchen/zulip,punchagan/zulip,tommyip/zulip,kou/zulip,jainayush975/zulip,souravbadami/zulip,sharmaeklavya2/zulip,joyhchen/zulip,eeshangarg/zulip,brainwane/zulip,dhcrzf/zulip,dattatreya303/zulip,PhilSk/zulip,andersk/zulip,aakash-cr7/zulip,jainayush975/zulip,Galexrt/zulip,isht3/zulip,christi3k/zulip,showell/zulip,sharmaeklavya2/zulip,brainwane/zulip,tommyip/zulip,amyliu345/zulip,jrowan/zulip,dattatreya303/zulip,SmartPeople/zulip,vaidap/zulip,zacps/zulip,Jianchun1/zulip,vabs22/zulip,dawran6/zulip,christi3k/zulip,susansls/zulip,vabs22/zulip,hackerkid/zulip,ryanbackman/zulip,shubhamdhama/zulip,vaidap/zulip,synicalsyntax/zulip,j831/zulip,sonali0901/zulip,niftynei/zulip,Jianchun1/zulip,christi3k/zulip,Galexrt/zulip,shubhamdhama/zulip,dawran6/zulip,jainayush975/zulip,TigorC/zulip,JPJPJPOPOP/zulip,brockwhittaker/zulip,brockwhittaker/zulip,Jianchun1/zulip,vabs22/zulip,PhilSk/zulip,amyliu345/zulip,j831/zulip,brainwane/zulip,PhilSk/zulip,samatdav/zulip,Diptanshu8/zulip,dhcrzf/zulip,andersk/zulip,rishig/zulip,brainwane/zulip,niftynei/zulip,mahim97/zulip,arpith/zulip,jackrzhang/zulip,Diptanshu8/zulip,rishig/zulip,samatdav/zulip,zacps/zulip,Jianchun1/zulip,brockwhittaker/zulip,j831/zulip,cosmicAsymmetry/zulip,sharmaeklavya2/zulip,amanharitsh123/zulip,jphilipsen05/zulip,andersk/zulip,andersk/zulip,kou/zulip,grave-w-grave/zulip,hackerkid/zulip,ryanbackman/zulip,showell/zulip,joyhchen/zulip,joyhchen/zulip,rishig/zulip,eeshangarg/zulip,punchagan/zulip,kou/zulip,zulip/zulip,dawran6/zulip,eeshangarg/zulip,calvinleenyc/zulip,synicalsyntax/zulip,AZtheAsian/zulip,timabbott/zulip,JPJPJPOPOP/zulip,jrowan/zulip,samatdav/zulip,dattatreya303/zulip,dhcrzf/zulip,rht/zulip,Diptanshu8/zulip,KingxBanana/zulip,andersk/zulip,AZtheAsian/zulip,vaidap/zulip,grave-w-grave/zulip,jrowan/zulip,Juanvulcano/zulip,kou/zulip,arpith/zulip,blaze225/zulip,arpith/zulip,tommyip/zulip,KingxBanana/zulip,arpith/zulip,jackrzhang/zulip,AZtheAsian/zulip,souravbadami/zulip,JPJPJPOPOP/zulip,jackrzhang/zulip,verma-varsha/zulip,jackrzhang/zulip,jainayush975/zulip,mahim97/zulip,niftynei/zulip,amyliu345/zulip,timabbott/zulip,showell/zulip,AZtheAsian/zulip,jrowan/zulip,dawran6/zulip,sharmaeklavya2/zulip,calvinleenyc/zulip,dhcrzf/zulip,grave-w-grave/zulip,brainwane/zulip,amanharitsh123/zulip,grave-w-grave/zulip,peguin40/zulip,SmartPeople/zulip,kou/zulip,zulip/zulip,blaze225/zulip,peguin40/zulip,hackerkid/zulip,dattatreya303/zulip,Jianchun1/zulip,souravbadami/zulip,mahim97/zulip,sonali0901/zulip,zacps/zulip,hackerkid/zulip,cosmicAsymmetry/zulip,joyhchen/zulip,zulip/zulip,timabbott/zulip,arpith/zulip,amanharitsh123/zulip,samatdav/zulip,sonali0901/zulip,zacps/zulip,eeshangarg/zulip,aakash-cr7/zulip,jainayush975/zulip,calvinleenyc/zulip,dawran6/zulip,TigorC/zulip,souravbadami/zulip,calvinleenyc/zulip,blaze225/zulip,punchagan/zulip,punchagan/zulip,rht/zulip,isht3/zulip,jackrzhang/zulip,vaidap/zulip,cosmicAsymmetry/zulip,amyliu345/zulip,showell/zulip,rht/zulip,verma-varsha/zulip,shubhamdhama/zulip,jphilipsen05/zulip,grave-w-grave/zulip,zulip/zulip,eeshangarg/zulip,niftynei/zulip,synicalsyntax/zulip,amyliu345/zulip,calvinleenyc/zulip,blaze225/zulip,showell/zulip,amanharitsh123/zulip,j831/zulip,synicalsyntax/zulip,brainwane/zulip,isht3/zulip,JPJPJPOPOP/zulip,AZtheAsian/zulip,TigorC/zulip,peguin40/zulip,zulip/zulip,Galexrt/zulip,arpith/zulip,amanharitsh123/zulip,Galexrt/zulip,ryanbackman/zulip,calvinleenyc/zulip,ryanbackman/zulip,Juanvulcano/zulip,dawran6/zulip,susansls/zulip,Juanvulcano/zulip,Juanvulcano/zulip,shubhamdhama/zulip,jphilipsen05/zulip,KingxBanana/zulip,jackrzhang/zulip,sonali0901/zulip,dhcrzf/zulip,SmartPeople/zulip,tommyip/zulip,joyhchen/zulip,brockwhittaker/zulip,Diptanshu8/zulip,souravbadami/zulip,tommyip/zulip,j831/zulip,christi3k/zulip,susansls/zulip,TigorC/zulip,aakash-cr7/zulip,TigorC/zulip,Jianchun1/zulip,sharmaeklavya2/zulip,showell/zulip,rishig/zulip,punchagan/zulip,vaidap/zulip,JPJPJPOPOP/zulip,rishig/zulip,Galexrt/zulip,brainwane/zulip,niftynei/zulip,christi3k/zulip,zulip/zulip,hackerkid/zulip,rht/zulip,brockwhittaker/zulip,peguin40/zulip,Diptanshu8/zulip