css: Use SCSS nesting for .hotkeys_table.
css: Use SCSS nesting for .hotkeys_table.

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