SD-88 : Implement validators for users
SD-215 : UserName shouldn't be editable
SD-224 : User avatar - Implement REST API backend
SD-224 : Implement REST API backend for Avatar upload
SD-229 : Saving changes on of user's profile is impossible
SD-224 : Implement REST API backend for Avatar upload
SD-224 : Implement REST API backend for Avatar upload
Fixed the reference encoder

SD-224 : Implement REST API backend for Avatar upload

Fixed the reference encoder when a property is returned.