Removed optional HTML tags.

This affects no content, only HTML tag content.

Remove (almost) all occurrances of the optional HTML tags: </td>, </th>,
</li>, </dt>, </dd> and </tr>. This is a step towards making the HTML
more consistent across the entire site.
Removed old (commented out) HTML code.

Removed some residual code from an old feedback form that haven't been
in use for a looong time.
Simplified n-dash in markdown.

Replaced all occurances of "&ndash;" with "--" in markdown code.
Added stuff to list of Canon Archive.

There were many transcripts that were previously only findable using
the search engine for "Archive of Okrandian Canon". Now all
transcripts have been added to the index.