Events not listeners.

Change-Id: I40cef875397bfc5d0d0221edefabb910dcacbb77
Reviewed-on: http://gerrit.dmdirc.com/3785
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>
Fix icon/titles in treeview.

Change-Id: If9a05e45d41551d0e5aa0d6f0fafabd08027d310
Reviewed-on: http://gerrit.dmdirc.com/3789
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager