minor css: Add margin above "Announce stream".
minor css: Add margin above "Announce stream".

The margin makes it slightly more clear that "Anyone can join"
vs. "People must be invited" is the main decision to make here.

synicalsyntax/zulip,mahim97/zulip,vabs22/zulip,punchagan/zulip,brockwhittaker/zulip,brockwhittaker/zulip,kou/zulip,amanharitsh123/zulip,hackerkid/zulip,shubhamdhama/zulip,rishig/zulip,jrowan/zulip,christi3k/zulip,dhcrzf/zulip,eeshangarg/zulip,timabbott/zulip,rht/zulip,verma-varsha/zulip,tommyip/zulip,jackrzhang/zulip,kou/zulip,andersk/zulip,vaidap/zulip,rishig/zulip,punchagan/zulip,punchagan/zulip,verma-varsha/zulip,amanharitsh123/zulip,dhcrzf/zulip,rht/zulip,rht/zulip,dhcrzf/zulip,showell/zulip,eeshangarg/zulip,Galexrt/zulip,vaidap/zulip,amanharitsh123/zulip,rishig/zulip,kou/zulip,punchagan/zulip,zulip/zulip,j831/zulip,verma-varsha/zulip,vabs22/zulip,brainwane/zulip,jrowan/zulip,jackrzhang/zulip,zulip/zulip,zulip/zulip,synicalsyntax/zulip,mahim97/zulip,tommyip/zulip,showell/zulip,rishig/zulip,timabbott/zulip,jphilipsen05/zulip,kou/zulip,synicalsyntax/zulip,hackerkid/zulip,zulip/zulip,shubhamdhama/zulip,jphilipsen05/zulip,verma-varsha/zulip,shubhamdhama/zulip,andersk/zulip,christi3k/zulip,kou/zulip,rht/zulip,Galexrt/zulip,hackerkid/zulip,punchagan/zulip,jphilipsen05/zulip,showell/zulip,Galexrt/zulip,timabbott/zulip,jphilipsen05/zulip,zulip/zulip,jrowan/zulip,eeshangarg/zulip,shubhamdhama/zulip,ryanbackman/zulip,brainwane/zulip,jackrzhang/zulip,timabbott/zulip,jackrzhang/zulip,vabs22/zulip,hackerkid/zulip,synicalsyntax/zulip,tommyip/zulip,andersk/zulip,j831/zulip,mahim97/zulip,showell/zulip,amanharitsh123/zulip,rishig/zulip,mahim97/zulip,vaidap/zulip,brainwane/zulip,hackerkid/zulip,brainwane/zulip,jackrzhang/zulip,punchagan/zulip,andersk/zulip,j831/zulip,j831/zulip,Galexrt/zulip,punchagan/zulip,jrowan/zulip,shubhamdhama/zulip,ryanbackman/zulip,ryanbackman/zulip,jphilipsen05/zulip,dhcrzf/zulip,jrowan/zulip,brockwhittaker/zulip,jrowan/zulip,zulip/zulip,kou/zulip,christi3k/zulip,synicalsyntax/zulip,mahim97/zulip,timabbott/zulip,Galexrt/zulip,Galexrt/zulip,tommyip/zulip,kou/zulip,amanharitsh123/zulip,rht/zulip,verma-varsha/zulip,andersk/zulip,eeshangarg/zulip,andersk/zulip,zulip/zulip,vabs22/zulip,jackrzhang/zulip,jphilipsen05/zulip,vabs22/zulip,synicalsyntax/zulip,showell/zulip,tommyip/zulip,synicalsyntax/zulip,shubhamdhama/zulip,dhcrzf/zulip,eeshangarg/zulip,rishig/zulip,ryanbackman/zulip,eeshangarg/zulip,rht/zulip,tommyip/zulip,ryanbackman/zulip,christi3k/zulip,dhcrzf/zulip,hackerkid/zulip,timabbott/zulip,vaidap/zulip,vaidap/zulip,showell/zulip,hackerkid/zulip,dhcrzf/zulip,vabs22/zulip,tommyip/zulip,vaidap/zulip,verma-varsha/zulip,brockwhittaker/zulip,amanharitsh123/zulip,rht/zulip,brainwane/zulip,christi3k/zulip,christi3k/zulip,eeshangarg/zulip,brockwhittaker/zulip,showell/zulip,jackrzhang/zulip,timabbott/zulip,brockwhittaker/zulip,brainwane/zulip,brainwane/zulip,j831/zulip,andersk/zulip,j831/zulip,rishig/zulip,Galexrt/zulip,mahim97/zulip,shubhamdhama/zulip,ryanbackman/zulip