[issue33507] Improving the html rendered by cgitb.html

[Stéphane Blondon]

Change by Stéphane Blondon <stephane.blondon at gmail.com>:


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keywords: +patch
pull_requests: +6529
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33507>
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