Move JMSTranslationBundle routes from routing_dev.yml to routing.yml

[ohvitorino]

The JMSTranslationBundle routes were being loaded in dev but not in prod. But users with ROLE_ADMIN need this routes to be able to perform translations in production environment.
We just needed to move the route definition to the appropriate file.

[StijnVrolijk]

@ohvitorino uw builds falen, kan jij daar eens naar kijken?

[ohvitorino]

It has something to do with phpunit returning 1 instead of 0 when there are warnings in the tests.

The test runner now exits with 1 (instead of 0) when all tests pass but there are warnings (see https://github.com/sebastianbergmann/phpunit/blob/master/ChangeLog-6.0.md#changed).

On the other hand I guess this only happens on PHPUnit 6.

[ohvitorino]

I'll try to fix the warnings since they need to be fixed if we upgrade to Symfony 3.