Allow more characters to be used in file names

[vkbo]

Summary:

File and folder names are currently restricted to mostly alphanumeric characters, plus a few more. This PR changes it so that only non-printable characters are disallowed, plus a handful of other characters primarily disallowed by Windows.

Related Issue(s):

Closes #1917

Reviewer's Checklist:

• The header of all files contain a reference to the repository license
• The overall test coverage is increased or remains the same as before
• All tests are passing
• All flake8 checks are passing and the style guide is followed
• Documentation (as docstrings) is complete and understandable
• Only files that have been actively changed are committed