Summary: Various tidying up of linting code.
Test Plan: `arc lint` and `arc unit` still pass.
Reviewers: chad, epriestley, #blessed_reviewers
Reviewed By: epriestley, #blessed_reviewers
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D9625
Summary:
Found https://secure.phabricator.com/D4519 but it was horribly out of date, so decided to write a new version.
Kinda clobbered together form that diff and the new version of ArcanistJSHintLinter
Test Plan: Tested on personal projects with js files.
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley, Korvin
Differential Revision: https://secure.phabricator.com/D9131
