[ESLint] Allow absolute paths for eslint.json

[letmaik]

Since config files are now exchangeable it would be nice if it is possible to also put an absolute path for ESLint's json file. If I have several projects then I might not want to copy the same eslint.json into each project.

[angelozerr]

It looks like same feature than #297 (but for JSHint).

[letmaik]

True! Didn't see that. So there's demand, which is good :)

[angelozerr]

So there's demand, which is good :)

If I understand your need. You wish to select an eslint.json from an another project (eg: commons-config). If you wish to do that I think you can do it by setting it the value at hand ../commons-config/eslint.json

[letmaik]

Not another project, but any file on my system. I really like to put it an absolute path like /foo/bar/eslint.json (or the equivalent on Windows).

[angelozerr]

Ok I have improved the UI, now you can select eslint.json from project, workspace or file system.

I have added too an error messag ewhen fiel is not valid. Tell me if it works for you.

Please wait that build https://opensagres.ci.cloudbees.com/job/tern.java/749/ finishes.

[letmaik]

Looks good, I'll test it later. A suggestion to avoid any confusion: I would use the singular in "Use config file"

[letmaik]

Works, thanks!

[angelozerr]

@neothemachine I use "Use config files" like WebSorms for JSHint https://www.jetbrains.com/webstorm/help/jshint.html.