Observation App - Completed with implementing redirection for anonymous user

**Anonymous user** can see disabled text input field's of the marker which he/she had not contributed.
- Anonymous user can ```create/edit/delete``` his/her created marker in valid session.
- As anonymous user clicks on markers not created by him/her : 
   - He will see *notification* in the popup of that marker itself, that disappear after 20 seconds.
   - From the ```Login \ Register``` button provided in the notification user can *redirect to our login page*.
   - Can only read information in the text fields of other's marker as this input boxes are disabled.
- And for registered user, now name of contributor is visible in edit view of maker popup.