put notification demo
poll server notifications
updated server notifications
polling server notifications
added notifications in a list
added numbers to notification bubble
added notification list and updated polling
added background to unread notifications
finished notifications except ajax #282
updated notification bubble #282
modified navbar #282
updated table names acc to conventions #282
added image to all notifications
added image to image list
added bg #282
started tests #282
added new background
documentation and modified validations #282
tests are done #282
changed project params in controller  #282