Rename variables in topic_list.build_list().
Rename variables in topic_list.build_list().

(s/subjects/topics/ in a couple places)

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