Revert "Sort itemView of market browser by meta level, highest meta level on top, ticket 90"

This reverts commit 7bc70617dc.

gui/marketBrowser.py

@@ -333,16 +333,11 @@ class MarketBrowser(wx.Panel):
         self.toggleButtons(usedMetas)
 
         def sort(id1, id2):
-            sMarket = service.Market.getInstance()
-            item1 = sMarket.getItem(id1)
-            item2 = sMarket.getItem(id2)
-            
-            if item1.getAttribute("metaLevel") > item2.getAttribute("metaLevel"):
-                return -1
-            elif item1.getAttribute("metaLevel") == item2.getAttribute("metaLevel"):
-                return 0
-            else:
-                return 1
+            grp = cmp(idGroupMap[id1], idGroupMap[id2])
+            if grp != 0:
+                return grp
+
+            return cmp(idNameMap[id1], idNameMap[id2])
 
         self.itemView.SortItems(sort)
         self.itemView.SetColumnWidth(0, wx.LIST_AUTOSIZE)