User Instance
GET /api/users/111/?format=api
{
"username": "Infected",
"gravatar": "//www.gravatar.com/avatar/149211b9806abd35e624b78f0c4c71c9?d=wavatar",
"has_key": false
}GET /api/users/111/?format=api
{
"username": "Infected",
"gravatar": "//www.gravatar.com/avatar/149211b9806abd35e624b78f0c4c71c9?d=wavatar",
"has_key": false
}