Config tool container type usage

@kaelig : logs usage to console:
```
CONTAINER USAGE

news: testcard,fashion,us,au

news/people: environment,football,au,au/business,uk/sport,us/sport,uk,uk/culture,us/culture,testcard,us,uk-news

comment/comment-and-debate: testcard,au/business,uk,au,uk/sport,fashion,education,environment,uk/culture,science,technology,lifeandstyle,uk/commentisfree,us/money,us,us/commentisfree

etc ... 
```