util/translation.py tool for notebook po and pot files management
argparse subcommands implemented
LocalData for notebook specific info and stringdocs added
some PEP8 spacing
fuzzy warnings fixed
added support for named languages in settings
Corrections in string docs
lazy messages added
typo in docstring and pep8 stuff
extract nN_ dummy translations
Merge pull request #238 from migeruhito/po_management

Po and pot management utility
startup code beautify
Exception check fix
Unused variable deleted
Simplify some path manipulation
import cleanup in startup code
Delete unused variable in notebook startup tests
Proper explicit definition of methods in startup code
Test function moved to misc.misc
test module function in misc.misc