Enable linting via Travis

[miketaylr]

eslint + pep8 for now.

[miketaylr]

Probably want to add an .eslintignore file so we're not failing on minified libs and the like.

[miketaylr]

Probably want to add an .eslintignore file so we're not failing on minified libs and the like.

Eh, it's only a few more lines to add what we want for JS. So I did that instead.

[miketaylr]

I'm gonna go with the following pep8 magical incantation to give to travis:

pep8 --ignore=E402 webcompat/ tests/ config.py.example

E402 complains about non-top-level imports, but in certain places we have to wait on the app to be initialized before importing junk.

[karlcow]

yeah \o/