Update to eslint@1.9.0.

[vqvu]

Updates eslint from 0.10.0 to 1.9.0 and grunt-eslint from 2.1.0 to 17.3.1 (!).

I followed the migration guide here: http://eslint.org/docs/user-guide/migrating-to-1.0.0 and sorted all rules in lexical order, with the no-* rules placed at the start.

@svozza, I had issues installing the new eslint at first too. It seems to be an npm bug though, since updating to npm@1.4.28 fixed it. Edit: I went back to my old version and it still works...not sure what the problem was.

[LewisJEllis]

Looks good. ESLint has come a long way this year!

[svozza]

Yeah, the errors I was seeing we're coming from no* rules. All working now.

[vqvu]

Yeah, there was one: no-inner-declarations, that I had to turn off because we had inner function and var declarations everywhere.