Save lists to disk when exiting the dialog.

Change-Id: I57e1747a352f04e3912bb93cc28eb6ceed8c73fa
Reviewed-on: http://gerrit.dmdirc.com/1399
Automatic-Compile: DMDirc Local Commits <dmdirc@googlemail.com>
Reviewed-by: Chris Smith <chris@dmdirc.com>

src/com/dmdirc/addons/ui_swing/dialogs/serverlist/ServerListDialog.java

@@ -33,7 +33,6 @@ import java.awt.event.ActionListener;
 import java.awt.image.ColorConvertOp;
 
 import javax.swing.JButton;
-import javax.swing.JPanel;
 
 import net.miginfocom.swing.MigLayout;
 
@@ -225,7 +224,9 @@ public final class ServerListDialog extends StandardDialog implements
     /** {@inheritDoc} */
     @Override
     public void dialogClosed(final boolean save) {
-        //Ignore
+        if (save) {
+            model.save();
+        }
     }
 
     /** {@inheritDoc} */

src/com/dmdirc/addons/ui_swing/dialogs/serverlist/ServerListModel.java

@@ -225,4 +225,11 @@ public class ServerListModel {
             listener.serverGroupAdded(parentGroup, sg);
         }
     }
+
+    /**
+     * Forces the server list to save all changes.
+     */
+    public void save() {
+        list.save();
+    }
 }