Widgetize activate_topic() in topic_list.js.
Widgetize activate_topic() in topic_list.js.

The activate_topic() function now lives on the object created
by build_widget().

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