eslintrc: Rework to extend eslint:recommended.
eslintrc: Rework to extend eslint:recommended.

Signed-off-by: Anders Kaseorg <dfdb7392591db597bc41cf266a9c3bc12a2706e5@zulip.com>

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