provision: Add dependency on ipython.
provision: Add dependency on ipython.

ipython dramatically improves the experience of `manage.py shell`.

Galexrt/zulip,calvinleenyc/zulip,brainwane/zulip,paxapy/zulip,zacps/zulip,Juanvulcano/zulip,jrowan/zulip,JPJPJPOPOP/zulip,samatdav/zulip,Diptanshu8/zulip,tommyip/zulip,isht3/zulip,cosmicAsymmetry/zulip,kou/zulip,peiwei/zulip,Frouk/zulip,dwrpayne/zulip,dattatreya303/zulip,susansls/zulip,ryanbackman/zulip,dhcrzf/zulip,vabs22/zulip,aakash-cr7/zulip,kou/zulip,umkay/zulip,andersk/zulip,Frouk/zulip,samatdav/zulip,rishig/zulip,Diptanshu8/zulip,calvinleenyc/zulip,timabbott/zulip,synicalsyntax/zulip,KingxBanana/zulip,ryanbackman/zulip,brainwane/zulip,showell/zulip,zulip/zulip,rht/zulip,Diptanshu8/zulip,zacps/zulip,aakash-cr7/zulip,timabbott/zulip,jackrzhang/zulip,peiwei/zulip,AZtheAsian/zulip,hackerkid/zulip,Galexrt/zulip,sup95/zulip,zulip/zulip,punchagan/zulip,jainayush975/zulip,rishig/zulip,ahmadassaf/zulip,aakash-cr7/zulip,joyhchen/zulip,vaidap/zulip,mohsenSy/zulip,showell/zulip,sonali0901/zulip,Vallher/zulip,ryanbackman/zulip,christi3k/zulip,mohsenSy/zulip,synicalsyntax/zulip,kou/zulip,showell/zulip,verma-varsha/zulip,hackerkid/zulip,amyliu345/zulip,arpith/zulip,ryansnowboarder/zulip,kou/zulip,punchagan/zulip,rishig/zulip,vaidap/zulip,dawran6/zulip,umkay/zulip,verma-varsha/zulip,Vallher/zulip,zacps/zulip,susansls/zulip,joyhchen/zulip,AZtheAsian/zulip,susansls/zulip,amanharitsh123/zulip,jphilipsen05/zulip,vabs22/zulip,tommyip/zulip,amyliu345/zulip,calvinleenyc/zulip,sup95/zulip,peiwei/zulip,sharmaeklavya2/zulip,ryanbackman/zulip,shubhamdhama/zulip,Jianchun1/zulip,sonali0901/zulip,paxapy/zulip,vikas-parashar/zulip,umkay/zulip,Juanvulcano/zulip,brockwhittaker/zulip,Juanvulcano/zulip,Galexrt/zulip,reyha/zulip,JPJPJPOPOP/zulip,dawran6/zulip,eeshangarg/zulip,reyha/zulip,sonali0901/zulip,punchagan/zulip,mahim97/zulip,dwrpayne/zulip,isht3/zulip,dattatreya303/zulip,vabs22/zulip,grave-w-grave/zulip,Diptanshu8/zulip,sup95/zulip,SmartPeople/zulip,Jianchun1/zulip,peiwei/zulip,verma-varsha/zulip,joyhchen/zulip,ahmadassaf/zulip,reyha/zulip,SmartPeople/zulip,mahim97/zulip,dawran6/zulip,aakash-cr7/zulip,andersk/zulip,rht/zulip,kou/zulip,JPJPJPOPOP/zulip,jainayush975/zulip,amanharitsh123/zulip,jrowan/zulip,rishig/zulip,KingxBanana/zulip,samatdav/zulip,timabbott/zulip,amyliu345/zulip,AZtheAsian/zulip,samatdav/zulip,KingxBanana/zulip,dhcrzf/zulip,samatdav/zulip,ahmadassaf/zulip,jrowan/zulip,Galexrt/zulip,jainayush975/zulip,umkay/zulip,blaze225/zulip,j831/zulip,blaze225/zulip,jackrzhang/zulip,joyhchen/zulip,eeshangarg/zulip,krtkmj/zulip,j831/zulip,isht3/zulip,dhcrzf/zulip,ryanbackman/zulip,arpith/zulip,cosmicAsymmetry/zulip,rht/zulip,susansls/zulip,brockwhittaker/zulip,christi3k/zulip,j831/zulip,jackrzhang/zulip,ahmadassaf/zulip,synicalsyntax/zulip,hackerkid/zulip,rishig/zulip,isht3/zulip,dattatreya303/zulip,christi3k/zulip,jainayush975/zulip,timabbott/zulip,aakash-cr7/zulip,ryanbackman/zulip,verma-varsha/zulip,krtkmj/zulip,hackerkid/zulip,reyha/zulip,Vallher/zulip,Vallher/zulip,kou/zulip,sup95/zulip,Vallher/zulip,dwrpayne/zulip,rht/zulip,SmartPeople/zulip,amyliu345/zulip,krtkmj/zulip,Vallher/zulip,peiwei/zulip,KingxBanana/zulip,vikas-parashar/zulip,calvinleenyc/zulip,tommyip/zulip,hackerkid/zulip,ryansnowboarder/zulip,sonali0901/zulip,vikas-parashar/zulip,susansls/zulip,Vallher/zulip,amanharitsh123/zulip,umkay/zulip,vabs22/zulip,dawran6/zulip,Diptanshu8/zulip,mahim97/zulip,Frouk/zulip,reyha/zulip,grave-w-grave/zulip,rht/zulip,jphilipsen05/zulip,dhcrzf/zulip,eeshangarg/zulip,krtkmj/zulip,TigorC/zulip,synicalsyntax/zulip,amanharitsh123/zulip,niftynei/zulip,punchagan/zulip,amanharitsh123/zulip,Frouk/zulip,Jianchun1/zulip,synicalsyntax/zulip,arpith/zulip,showell/zulip,timabbott/zulip,peiwei/zulip,vaidap/zulip,dwrpayne/zulip,Jianchun1/zulip,zulip/zulip,krtkmj/zulip,souravbadami/zulip,PhilSk/zulip,mahim97/zulip,dawran6/zulip,vaidap/zulip,SmartPeople/zulip,TigorC/zulip,amyliu345/zulip,synicalsyntax/zulip,brockwhittaker/zulip,souravbadami/zulip,dhcrzf/zulip,andersk/zulip,punchagan/zulip,christi3k/zulip,brainwane/zulip,SmartPeople/zulip,JPJPJPOPOP/zulip,ryansnowboarder/zulip,zacps/zulip,PhilSk/zulip,Jianchun1/zulip,arpith/zulip,jrowan/zulip,mohsenSy/zulip,tommyip/zulip,TigorC/zulip,susansls/zulip,krtkmj/zulip,sharmaeklavya2/zulip,Frouk/zulip,rishig/zulip,KingxBanana/zulip,JPJPJPOPOP/zulip,dwrpayne/zulip,Frouk/zulip,zulip/zulip,cosmicAsymmetry/zulip,jackrzhang/zulip,niftynei/zulip,cosmicAsymmetry/zulip,aakash-cr7/zulip,grave-w-grave/zulip,vaidap/zulip,cosmicAsymmetry/zulip,jackrzhang/zulip,AZtheAsian/zulip,cosmicAsymmetry/zulip,grave-w-grave/zulip,niftynei/zulip,showell/zulip,dwrpayne/zulip,paxapy/zulip,sharmaeklavya2/zulip,tommyip/zulip,sharmaeklavya2/zulip,vikas-parashar/zulip,ryansnowboarder/zulip,Frouk/zulip,Juanvulcano/zulip,brockwhittaker/zulip,PhilSk/zulip,ahmadassaf/zulip,souravbadami/zulip,jackrzhang/zulip,amanharitsh123/zulip,calvinleenyc/zulip,JPJPJPOPOP/zulip,verma-varsha/zulip,zulip/zulip,dattatreya303/zulip,mahim97/zulip,Juanvulcano/zulip,tommyip/zulip,arpith/zulip,jphilipsen05/zulip,shubhamdhama/zulip,ryansnowboarder/zulip,andersk/zulip,showell/zulip,jackrzhang/zulip,andersk/zulip,christi3k/zulip,Diptanshu8/zulip,peguin40/zulip,synicalsyntax/zulip,Galexrt/zulip,peiwei/zulip,sharmaeklavya2/zulip,brainwane/zulip,mohsenSy/zulip,grave-w-grave/zulip,paxapy/zulip,zulip/zulip,jphilipsen05/zulip,j831/zulip,andersk/zulip,sharmaeklavya2/zulip,zacps/zulip,kou/zulip,vabs22/zulip,blaze225/zulip,amyliu345/zulip,umkay/zulip,j831/zulip,eeshangarg/zulip,brainwane/zulip,zacps/zulip,reyha/zulip,rht/zulip,samatdav/zulip,vikas-parashar/zulip,jphilipsen05/zulip,peguin40/zulip,tommyip/zulip,hackerkid/zulip,christi3k/zulip,rishig/zulip,PhilSk/zulip,TigorC/zulip,PhilSk/zulip,timabbott/zulip,SmartPeople/zulip,vikas-parashar/zulip,sonali0901/zulip,arpith/zulip,KingxBanana/zulip,dattatreya303/zulip,blaze225/zulip,blaze225/zulip,verma-varsha/zulip,jainayush975/zulip,jainayush975/zulip,dawran6/zulip,andersk/zulip,rht/zulip,jrowan/zulip,jphilipsen05/zulip,ahmadassaf/zulip,sup95/zulip,brainwane/zulip,niftynei/zulip,punchagan/zulip,vaidap/zulip,AZtheAsian/zulip,peguin40/zulip,shubhamdhama/zulip,punchagan/zulip,PhilSk/zulip,niftynei/zulip,shubhamdhama/zulip,ahmadassaf/zulip,brainwane/zulip,ryansnowboarder/zulip,sonali0901/zulip,hackerkid/zulip,umkay/zulip,brockwhittaker/zulip,TigorC/zulip,souravbadami/zulip,isht3/zulip,peguin40/zulip,zulip/zulip,dhcrzf/zulip,shubhamdhama/zulip,dwrpayne/zulip,showell/zulip,shubhamdhama/zulip,AZtheAsian/zulip,mohsenSy/zulip,timabbott/zulip,calvinleenyc/zulip,mahim97/zulip,krtkmj/zulip,eeshangarg/zulip,blaze225/zulip,Jianchun1/zulip,peguin40/zulip,sup95/zulip,souravbadami/zulip,paxapy/zulip,vabs22/zulip,dhcrzf/zulip,j831/zulip,grave-w-grave/zulip,eeshangarg/zulip,Galexrt/zulip,mohsenSy/zulip,ryansnowboarder/zulip,niftynei/zulip,joyhchen/zulip,joyhchen/zulip,peguin40/zulip,eeshangarg/zulip,Juanvulcano/zulip,jrowan/zulip,isht3/zulip,paxapy/zulip,shubhamdhama/zulip,TigorC/zulip,brockwhittaker/zulip,dattatreya303/zulip,Galexrt/zulip,souravbadami/zulip