Update database to 1581357 and do necessary schema changes to support changed source data

gui/builtinContextMenus/fitAddCurrentlyOpen.py

@@ -1,7 +1,6 @@
 # noinspection PyPackageRequirements
 import wx
 
-import gui.fitCommands as cmd
 import gui.mainFrame
 from gui.builtinViews.emptyView import BlankPage
 from gui.contextMenu import ContextMenuUnconditional

gui/builtinContextMenus/itemVariationChange.py

@@ -56,9 +56,7 @@ class ChangeItemToVariation(ContextMenuCombined):
         fit = sFit.getFit(self.mainFrame.getActiveFit())
 
         def get_metalevel(x):
-            if 'metaLevel' not in x.attributes:
-                return 0
-            return x.attributes['metaLevel'].value
+            return x.metaLevel or 0
 
         def get_metagroup(x):
             # We want deadspace before officer mods