Extract get_compare_function() in activity.js.
Extract get_compare_function() in activity.js.

shubhamdhama/zulip,amanharitsh123/zulip,rishig/zulip,kou/zulip,PhilSk/zulip,showell/zulip,zulip/zulip,vaidap/zulip,amanharitsh123/zulip,SmartPeople/zulip,jrowan/zulip,andersk/zulip,souravbadami/zulip,timabbott/zulip,dawran6/zulip,amanharitsh123/zulip,Galexrt/zulip,eeshangarg/zulip,showell/zulip,jainayush975/zulip,jainayush975/zulip,tommyip/zulip,mahim97/zulip,christi3k/zulip,blaze225/zulip,ryanbackman/zulip,dattatreya303/zulip,verma-varsha/zulip,blaze225/zulip,hackerkid/zulip,vabs22/zulip,synicalsyntax/zulip,susansls/zulip,brockwhittaker/zulip,amanharitsh123/zulip,verma-varsha/zulip,showell/zulip,andersk/zulip,jphilipsen05/zulip,samatdav/zulip,Galexrt/zulip,jrowan/zulip,aakash-cr7/zulip,christi3k/zulip,synicalsyntax/zulip,dattatreya303/zulip,jrowan/zulip,brockwhittaker/zulip,shubhamdhama/zulip,jackrzhang/zulip,timabbott/zulip,synicalsyntax/zulip,shubhamdhama/zulip,dattatreya303/zulip,j831/zulip,hackerkid/zulip,brockwhittaker/zulip,andersk/zulip,jrowan/zulip,aakash-cr7/zulip,kou/zulip,jackrzhang/zulip,j831/zulip,PhilSk/zulip,zulip/zulip,Galexrt/zulip,Galexrt/zulip,timabbott/zulip,jackrzhang/zulip,rht/zulip,amanharitsh123/zulip,brainwane/zulip,brainwane/zulip,ryanbackman/zulip,hackerkid/zulip,JPJPJPOPOP/zulip,mahim97/zulip,blaze225/zulip,vaidap/zulip,tommyip/zulip,Galexrt/zulip,jackrzhang/zulip,punchagan/zulip,JPJPJPOPOP/zulip,vaidap/zulip,tommyip/zulip,vaidap/zulip,ryanbackman/zulip,samatdav/zulip,vabs22/zulip,eeshangarg/zulip,Galexrt/zulip,samatdav/zulip,susansls/zulip,kou/zulip,kou/zulip,tommyip/zulip,synicalsyntax/zulip,andersk/zulip,JPJPJPOPOP/zulip,jphilipsen05/zulip,samatdav/zulip,susansls/zulip,jphilipsen05/zulip,christi3k/zulip,eeshangarg/zulip,brainwane/zulip,christi3k/zulip,shubhamdhama/zulip,shubhamdhama/zulip,rht/zulip,kou/zulip,punchagan/zulip,brainwane/zulip,rishig/zulip,souravbadami/zulip,brainwane/zulip,verma-varsha/zulip,hackerkid/zulip,synicalsyntax/zulip,zulip/zulip,jainayush975/zulip,ryanbackman/zulip,hackerkid/zulip,ryanbackman/zulip,Galexrt/zulip,showell/zulip,rishig/zulip,dawran6/zulip,susansls/zulip,eeshangarg/zulip,jainayush975/zulip,dhcrzf/zulip,jainayush975/zulip,dattatreya303/zulip,timabbott/zulip,timabbott/zulip,shubhamdhama/zulip,zulip/zulip,vabs22/zulip,j831/zulip,punchagan/zulip,PhilSk/zulip,PhilSk/zulip,eeshangarg/zulip,andersk/zulip,mahim97/zulip,aakash-cr7/zulip,rishig/zulip,JPJPJPOPOP/zulip,brockwhittaker/zulip,j831/zulip,SmartPeople/zulip,dawran6/zulip,christi3k/zulip,souravbadami/zulip,vabs22/zulip,verma-varsha/zulip,jackrzhang/zulip,SmartPeople/zulip,JPJPJPOPOP/zulip,andersk/zulip,rht/zulip,dhcrzf/zulip,aakash-cr7/zulip,jphilipsen05/zulip,blaze225/zulip,jphilipsen05/zulip,jackrzhang/zulip,hackerkid/zulip,dhcrzf/zulip,SmartPeople/zulip,rishig/zulip,vaidap/zulip,mahim97/zulip,jainayush975/zulip,punchagan/zulip,amanharitsh123/zulip,jrowan/zulip,dhcrzf/zulip,souravbadami/zulip,showell/zulip,j831/zulip,andersk/zulip,rht/zulip,SmartPeople/zulip,zulip/zulip,dawran6/zulip,mahim97/zulip,JPJPJPOPOP/zulip,verma-varsha/zulip,rht/zulip,rishig/zulip,tommyip/zulip,dattatreya303/zulip,samatdav/zulip,tommyip/zulip,vabs22/zulip,timabbott/zulip,vabs22/zulip,kou/zulip,rht/zulip,j831/zulip,brainwane/zulip,susansls/zulip,rht/zulip,zulip/zulip,dawran6/zulip,punchagan/zulip,punchagan/zulip,synicalsyntax/zulip,hackerkid/zulip,eeshangarg/zulip,dhcrzf/zulip,susansls/zulip,aakash-cr7/zulip,tommyip/zulip,blaze225/zulip,souravbadami/zulip,brockwhittaker/zulip,timabbott/zulip,showell/zulip,shubhamdhama/zulip,samatdav/zulip,synicalsyntax/zulip,blaze225/zulip,ryanbackman/zulip,aakash-cr7/zulip,dawran6/zulip,eeshangarg/zulip,christi3k/zulip,punchagan/zulip,verma-varsha/zulip,dhcrzf/zulip,dhcrzf/zulip,showell/zulip,vaidap/zulip,dattatreya303/zulip,PhilSk/zulip,jrowan/zulip,mahim97/zulip,PhilSk/zulip,rishig/zulip,jphilipsen05/zulip,kou/zulip,jackrzhang/zulip,souravbadami/zulip,SmartPeople/zulip,brainwane/zulip,brockwhittaker/zulip,zulip/zulip