home: Simplify logic for realm_icon_source/url.
home: Simplify logic for realm_icon_source/url.

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