Remove BuddiesModel and BuddyModelBase
We should use BuddyListModel everywhere with insert/remove features. Separate class should be created to connect BuddyManager with a BuddyListModel. Also, BuddyManager could have ::createNewBuddyListModel or just ::model method. Fixed in Git commit: 25f74de5 Junior job: 0
(from redmine: created on 2012-02-20, closed on 2012-03-12)