User Instance
GET /api/users/25/?format=api
{
"username": "Bouska",
"gravatar": "//www.gravatar.com/avatar/6e08d74585556d2444bff64ddf989f2c?d=wavatar",
"has_key": false
}GET /api/users/25/?format=api
{
"username": "Bouska",
"gravatar": "//www.gravatar.com/avatar/6e08d74585556d2444bff64ddf989f2c?d=wavatar",
"has_key": false
}