Fix/localization

| Q                    | A
| -------------------- | ---
| Bug fix?             | Yes !!!
| New feature?         | No
| BC breaks?           | No
| CI currently passes? | WIP
| Tests pass?          | Yes
| Scenarios pass?      | Yes
| Checkstyle issues?   | No
| Changelog updated?   | No
| Fixed tickets        |
| Doc PR               |

Fixes problems with number fields and switches for people who actually pleased the cat and changed the locale in their parameters.yml file.

As a reminder, this is the cat : 
http://cdn.cutestpaw.com/wp-content/uploads/2012/08/Snoopy-010.jpg