Updated Tests for User Endpoints

- [ ] Users
    - [x] Getting Avatars - GET https://api.crowdmap.com/v1/users/:user_id/avatar/
    - [x] Get Users Followed By User - GET https://api.crowdmap.com/v1/users/:user_id/follows/
    - [x] Verify Following Relationship - GET https://api.crowdmap.com/v1/users/:user_id/follows/:follower_id/
    - [x] Getting Users Followers - GET https://api.crowdmap.com/v1/users/:user_id/followers/
    - [x] Get Users Notifications - GET https://api.crowdmap.com/v1/users/:user_id/notifications/