If the response content isn't the one expected, instead of checking into the whole DOM (with node tag, etc ..) we only check the text.
So if it fails, phpunit will display only the text, not all node tag. It'll be easier to read.
- convert english translation to translate key
- remove baggy template for login (never used since user isn't logged in and it'll use the default theme: material)
- fix tests about text in response (now checking translation key instead of translated text)
- remove all ugly `<div class="hidden">{{ form_rest(form) }}</div>`
Since password are linked to username it was hard to change username while checking that the password is the good one.
Instead of doing crazy things to achieve that, I act that user won't be able to update username.
Also, username (and email) must be unique, since people logged in using username and can request a new password using email.
This should fix#1149
Re-defined the config / user relation to be OneToOne bidirectionnal.
ConfigType is now a service so I can inject the list of available themes that are also used by LiipThemeBundle
Force sqlite for test
In case of people use a different driver in parameter.yml (yes I do :))
