fixes Issue #4 : Redraw graph only once on updating parameter values,i.e. block signals in iupdateTable and emit signal only once.

data/Container.py

@@ -79,6 +79,11 @@ class Peak(BaseContainer):
         self.param_number = 4
 
     def set_id(self, id_num):
+        """
+        Sets color of the peak
+        :param id_num: peak id
+        :type id_num: int
+        """
         self.widget.setId(id_num)
         self.color = id_to_color(id_num)
         self.widget.setColor(self.color)