Channel list is now sortable

Change-Id: Id96b2279573b44e24f408f15cba71b38f1b804e0
Fixes-Issue: CLIENT-346
Reviewed-on: http://gerrit.dmdirc.com/2395
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Shane Mc Cormack <shane@dmdirc.com>

src/com/dmdirc/addons/ui_swing/dialogs/channellist/ResultsPanel.java

         final JScrollPane sp = new JScrollPane();
         table = new PackingTable(model, sp);
         table.addMouseListener(this);
+        table.setAutoCreateRowSorter(true);
         model.addTableModelListener(this);
         sp.setViewportView(table);
         setLayout(new MigLayout("fill, hidemode 3, ins 0"));