css: Use SCSS nesting in settings.scss for `.modal`.
css: Use SCSS nesting in settings.scss for `.modal`.

andersk/zulip,showell/zulip,punchagan/zulip,showell/zulip,timabbott/zulip,zulip/zulip,kou/zulip,timabbott/zulip,kou/zulip,brainwane/zulip,andersk/zulip,hackerkid/zulip,brainwane/zulip,kou/zulip,rht/zulip,synicalsyntax/zulip,eeshangarg/zulip,kou/zulip,rht/zulip,synicalsyntax/zulip,eeshangarg/zulip,brainwane/zulip,andersk/zulip,punchagan/zulip,zulip/zulip,brainwane/zulip,hackerkid/zulip,zulip/zulip,rht/zulip,punchagan/zulip,brainwane/zulip,synicalsyntax/zulip,kou/zulip,showell/zulip,hackerkid/zulip,eeshangarg/zulip,punchagan/zulip,zulip/zulip,shubhamdhama/zulip,synicalsyntax/zulip,eeshangarg/zulip,eeshangarg/zulip,rht/zulip,shubhamdhama/zulip,timabbott/zulip,zulip/zulip,brainwane/zulip,synicalsyntax/zulip,shubhamdhama/zulip,hackerkid/zulip,showell/zulip,kou/zulip,rht/zulip,punchagan/zulip,shubhamdhama/zulip,rht/zulip,andersk/zulip,hackerkid/zulip,andersk/zulip,timabbott/zulip,zulip/zulip,showell/zulip,kou/zulip,shubhamdhama/zulip,eeshangarg/zulip,rht/zulip,eeshangarg/zulip,andersk/zulip,brainwane/zulip,shubhamdhama/zulip,shubhamdhama/zulip,punchagan/zulip,timabbott/zulip,timabbott/zulip,andersk/zulip,showell/zulip,zulip/zulip,hackerkid/zulip,synicalsyntax/zulip,timabbott/zulip,showell/zulip,punchagan/zulip,hackerkid/zulip,synicalsyntax/zulip