Gabriel Bastard

Results 2 issues of Gabriel Bastard

Crawling/Testing not working with that config. ![screenshot from 2019-02-20 18-18-44](https://user-images.githubusercontent.com/13065528/53110753-ffa72f00-353b-11e9-9482-5ce193264c2f.png) The xpath doesn't seem to find any element. ![screenshot from 2019-02-20 18-20-31](https://user-images.githubusercontent.com/13065528/53110881-3ed58000-353c-11e9-85b6-222164b4190c.png) Crawler is working when I comment `options_selenium.add_argument('headless') `...

Regarding issue #65, I implemented a chrome headless option which allow to run a contributor while seeing the browser. It may also help debugging.