Added new option for GxsForums and FeedReader - Open all forums/feeds in new tab.

Option=on (standard)
- no standard tab
- new tab by single click
- no menu entry "Open in new tab"

Option=off:
- standard tab (not closeable)
- open in standard tab by single click
- menu entry "Open in new tab"
- open new tab with middle mouse button


git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@6060 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/notifyqt.h

@@ -66,6 +66,8 @@ class NotifyQt: public QObject, public NotifyBase
 
 		void testToaster(uint notifyFlags, /*RshareSettings::enumToasterPosition*/ int position, QPoint margin);
 
+		void notifySettingsChanged();
+
 	signals:
 		// It's beneficial to send info to the GUI using signals, because signals are thread-safe
 		// as they get queued by Qt.
@@ -107,6 +109,7 @@ class NotifyQt: public QObject, public NotifyBase
 
 		/* Notify from GUI */
 		void chatStyleChanged(int /*ChatStyle::enumStyleType*/ styleType);
+		void settingsChanged();
 
 	public slots:
 		void UpdateGUI(); /* called by timer */