[issue30290] IDLE: add tests for help_about.py

[Terry J. Reedy]

Terry J. Reedy added the comment:

Follow-up issues.

A. Move code and tests into help.py and test_help.py.
B. Improve content: 1) #25224; 2) remove or update credits;
3) reconsider each item.
C. Improve appearance: 1) ttk widgets; 2) Redo entire look.

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30290>
_______________________________________