typos identified by github.com/crate-ci/typos

[Alex-Jordan]

These are typos identified by github.com/crate-ci/typos, except not typos in lib. Except a few that are in lib that I either already had on my typos branch, or that are connected to a typo in templates and can only be fixed at the same time.

[Alex-Jordan]

github.com/crate-ci/typos identifies 1185 typos in lib. I'm sure some of them are false positives, but I would not be surprised if around 1000 of them are legit. I'll save that for some other time. Or anyone else, feel free to try this tool. I'll be offline for a few weeks now.

[somiaj]

I looked over the typos. Most are just comments/output text and look fine. A few did change some typos in variable names. In this case they appear to have found all cases, because it looks like the variable names were consistently spelled wrong in the code. Though I didn't do any testing and some should be done to ensure that code changes didn't break anything (initial look is most likely not).

[pstaabp]

Looking over this, it seems that there are only two files with code ramifications, PGProblemEditor.pm and the template save_as_form.html and since the typos were consistent in the previous versions and fixed in both places, this should be good.

Should we also then revert the typo in doc/Artistic ?

[Alex-Jordan]

@pstaabp I just now reverted that license typo correction.