4a. Change uglyMidcap widget names and CamelCase function names to pep8_conformant names. Simplify: byline, email, docs, pyver, tkver, idlever, py_license, py_copyright, py_credits, readme, idle_news, idle_credits.
4b. Change CamelCase function names to pep8_conformant names.
ShowIDLEAbout => show_readme,
5. Add docstrings
For show_xyz functions, "Command for xyz button"? even though not verb?
#30303 implemented 2a, improve textview and tests.
Cheryl: this should be much easier than colorizer. Let me know if you want to take a stab at at least 4 and 5.