UNIT_TESTING_18413_USER_LOGOUT

- [x] Test in Model
   - [x] create test check token exist ok
   - [x] create test check token not exist ok
   - [x] create test logout ok
- [x] Test in Controller
   - [x] create test check token invalid ok
   - [x] create test check token empty
   - [x] create test logout
Try not to make any changes like this in real project because it become changes on SVN etc.