Start: encode basename to avoid crashes on non-ascii file names

[steelman]

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• Branch rebased on latest master git pull --rebase upstream master
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• Commit message is well-written
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[luzpaz]

Please fix typo in PR name s/endode/encode

[chennes]

Is there a bug report or forums topic about this one? I'm not seeing crashes on non-ASCII filenames on my Win10 system.

[steelman]

No, I haven't filed one. On Debian 10 with FreeCAD linked against Python 2.7 I've got

'ascii' codec can't decode byte 0xc5 in position 8: ordinal not in range(128)

after editing a file with a non-ascii character in its name and the Start Page is blank.