anchor.diff:                  "email": "admin@a.pl",
                   "created_at": "2017-02-04T10:59:43.684Z",
                   "updated_at": "2017-02-04T10:59:43.684Z",
  +                "projects": [],
                   "roles": [
                     "admin",
                     "user"
  
positive.code:             "errorMsg": "Deactivating user failed"
          }
  
  ## User Nickname [/api/users/{user_id}/nickName]
  
  ### Change User Nickname [PATCH]
  
  + Request (application/merge-patch+json)
  
          { 
            "nickName": "New Nickname Value" 
          }
          
  + Response 200
  
  
  + Response 500 (application/json)
      
          {
              "errorMsg": "Modifying user nick name user failed"
          }
          
  
  ## User Roles [/api/users/{user_id}/roles]
  
  ### Change User Roles [PATCH]
  
  + Request (application/merge-patch+json)
  
          { 
            "roles": ["newRole1", "newRoleN"] 
          }
          
  + Response 200
  
  
  + Response 500 (application/json)
      
          {
              "errorMsg": "Modifying user roles failed"
negative.code:     
  
  ### Add New User [POST]
  Roles: **[admin]**
  
  + Request (application/json)
  
  