put notification demo
poll server notifications
updated server notifications
polling server notifications
added a spec file to checkout #179
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
 added create , delete , assign task #144 #146 #200
 added missing model of task_user , documentation cleaning , and changed size of text field #146 #144 #200