Fix close & session

First, I'm really sorry for this bad commit ('git' talking..).
The fact is that the 3 bugs fixed here were found chained playing
with close code. Here it is the report:
- fix close window (it now really appears on multiple window closing)
- fix saveSession (saving one call for each site loaded and storing
  better information): saveSession is now called on loadFinished
- clean up some compilation warnings

1 files changed, 2 insertions, 0 deletions

diff --git a/src/application.h b/src/application.h
index cc9bc433..0c4d3101 100644
--- a/src/application.h
+++ b/src/application.h
@@ -132,6 +132,8 @@ private slots:
     // the general place to set private browsing
     void setPrivateBrowsingMode(bool);
 
+    void queryQuit();
+
 private:
     QWeakPointer<HistoryManager> m_historyManager;
     QWeakPointer<BookmarkProvider> m_bookmarkProvider;