Upgrade JSLint to the commit we were using before switching to a submodule

As @peterflynn mentioned in #4467 I checked to a slightly older version of JSLint with switching to a submodule. I thought it wouldn't be an issue, but there are new indentation issues that can be seen now but not with the version we used to have, like in `EditorCommandHandlers`. This would also be fixed by #4557, but until then, this gives an easy fix.