Rework FitChanged command to avoid refreshing graph multiple times in certain cases

gui/graphFrame/frame.py

@@ -155,7 +155,8 @@ class GraphFrame(wx.Frame):
 
     def OnFitChanged(self, event):
         event.Skip()
-        self.clearCache(reason=GraphCacheCleanupReason.fitChanged, extraData=event.fitID)
+        for fitID in event.fitIDs:
+            self.clearCache(reason=GraphCacheCleanupReason.fitChanged, extraData=fitID)
         self.draw()
 
     def OnFitRenamed(self, event):

gui/graphFrame/lists.py

@@ -94,7 +94,8 @@ class BaseList(gui.display.Display):
 
     def OnFitChanged(self, event):
         event.Skip()
-        self.update(self.fits)
+        if set(event.fitIDs).union(f.ID for f in self.fits):
+            self.update(self.fits)
 
     def getSelectedFits(self):
         fits = []