API : Do not display all informations about user

[tcitworld]

When I get an entry, I also get all these informations about the user :

"user": {
    "credentials_expired": false,
    "email": "",
    "email_canonical": "",
    "enabled": true,
    "expired": false,
    "groups": [],
    "id": 1,
    "locked": false,
    "password": "hrW/5/AdHOIQJfBS73zAIa+pYEspY+SHrvd3rFUtR91M0RcXuQd/ZW4xy4Bohb4ehR/MCrzXIX2OEa95kFsmWg==",
    "roles": [
            "ROLE_USER",
            "ROLE_SUPER_ADMIN"
    ],
    "salt": "l2gozpvrvw0ooo048ogsgckowg04488",
    "username": "wallabag",
    "username_canonical": "wallabag"

I guess we should only keep email, enabled, expired, id and username.