Merge pull request #45 from acsone/FILE_MENU_WITH_PLUGIN_ENTRIES

Arelle with tkinter GUI: make sure the File menu is complete when there are plug-ins extending it

arelle/CntlrWinMain.py

@@ -113,6 +113,7 @@ def __init__(self, parent):
             elif label == "PLUG-IN":
                 for pluginMenuExtender in pluginClassMethods(command):
                     pluginMenuExtender(self, self.fileMenu)
+                    self.fileMenuLength += 1
             else:
                 self.fileMenu.add_command(label=label, underline=0, command=command, accelerator=shortcut_text)
                 self.parent.bind(shortcut, command)