put notification demo
poll server notifications
updated server notifications
polling server notifications
working on the method #252
added a spec file to checkout #179
added notifications in a list
added method for deleting project and some tests #257
added sometests #257
added numbers to notification bubble
added umls #257
tests are fully working #257
adjusted documentation #257
adjusted documentation #257
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