fix problem with SFC action/transition rename

Traceback (most recent call last):
File "/home/developer/WorkData/PLC/beremiz/beremiz/IDEFrame.py", line
1636, in OnProjectTreeItemEndEdit
elif new_name.upper() in [name.upper() for name in
self.Controler.GetProjectPouVariableNames(pou_name) if name !=
old_name]:
NameError: global name 'pou_name' is not defined

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To generate message.pot file:

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	python mki18n.py -p --domain=Beremiz

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To generate .mo files for all languages:

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	python mki18n.py -m --moTarget=../locale --domain=Beremiz

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To generate app.fil:

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    find .. -name "*.py" -exec grep -q '_(' {} ';' -print -o -name "*XSD*" -print -o -name "*.csv" -print | grep -v '/build/' | grep -v '/pyjs/' > app.fil