implemented more db cursor methods: scroll, next, __iter__

src/python/samples/recollgui/qrecoll.py

@@ -227,7 +227,7 @@ class RclGui_Main(QtGui.QMainWindow):
         self.ui.resTable.setModel(self.qmodel)
 
     def onexit(self):
-        sys.exit(0)
+        self.close()
 
 
 def Usage():
@@ -235,7 +235,6 @@ def Usage():
     sys.exit(1)
 
 
-
 def main(args):
 
     app = QtGui.QApplication(args)