Clean up article tags about perldotcom

[briandfoy]

Ran into one of these with #64

[briandfoy]

I've gone through all the legacy/ articles in db1f474 in the remove-authors-from-tags branch

Some articles still have names as tags because the article is an interview or book review.

I did not clean up similar tags though. Many tags should be simplified too.

[briandfoy]

I also checked the non-legacy Perltricks stuff but didn't find anything there (but I didn't expect to). Review the work and merge if this is what you wanted.

[briandfoy]

Found a few more when I was working on tag collation. I removed them in 05ace4a

[dnmfarrell]

Oh man bin/q --sql 'select distinct tag from tag order by 1' shows we have some work to do!