Save all settings in talkfile dialog.

Save settings that haven't been and rename the configuration file value for the
talked folder. Since the folder was replaced with a list we can't use the old
value anymore so there's no need to keep a name that's not really suitable
anymore.

Solves FS#12634.

Change-Id: I8db2a536409b94c45f28db9418a11f11f57dfacb

rbutil/rbutilqt/installtalkwindow.h

@@ -39,6 +39,7 @@ class InstallTalkWindow : public QDialog
 
     private slots:
         void updateSettings(void);
+        void saveSettings(void);
 
     signals:
         void settingsUpdated(void);