1) stripped off attachment field;
2) made logos (group's, sender's, etc) in expanded view the same size as in condensed view;
3) turned on notification showing upon click;
4) fixed cropped right border of Invite and Transactions notifications;
5) enabled "Collapse All" button;
6) stripped off unnecessary icons.
- added code to sort notifications between tabs: Invites, Transactions, System messages
- made cosmetic changes according to comment from 27/Jan/15 in Jira
- added code to show correct number of notifications on each tab
- added code to close all notifications on current tab via "Delete all" button
Andrey Lihatskiy