add next/submit.html and improve FAQ and other refs to entering the IOCCC

Added a new `next/submit.html` to move the "how to submit" form "in-line"
of the top FAQ entry into a new page managed by `next/submit.md`.
Thus, `next/submit.html` is a parallel to `next/register.html`
and `next/submit.md` is a parallel to `next/register.md`.

Changed the FAQ "faq.html#submit" and into "faq.html#enter".

Added individual tags for the steps in FAQ0.0.

Moved "faq.html#register" down to FAQ 0.0 step 2.

Added "faq.html#submit" for FAQ 0.0 step 5,
however elsewhere often "next/submit.html" is used.

Changed references for "faq.html#upload" to "next/submit.html".

We made a number of changes to the following markdown files to reflect the above:

- `about.md`
- `faq.md`
- `index.md`
- `markdown.md`
- `next/README.md`
- `next/README.md`
- `next/guidelines.md`
- `next/register.md`
- `next/rules.md`
- `nojs-menu.md`
- `status.md`

as well as these files:

- `bin/gen-top-html.sh`
- `bin/md2html.cfg`

and added:

- `next/submit.html`
- `next/submit.md`

Perform `make www` and `make gen_status` to perform the above and test under macOS.

TODO: Add images about the mailing list to `next/register.md`.  See the line:

```
XXX - **put images and other details about joining the mailing list here** - XXX
```

next/index.html

@@ -462,7 +462,7 @@ Mastodon</a> feed as <em>sometimes</em> the
 <p>You may <a href="register.html">register for the IOCCC</a> while the contest is <a href="../status.html#pending">pending</a>,
 however you will <strong>NOT</strong> receive your own Email message containing your very own
 <strong>Username and Initial Password until the contest is <a href="../status.html#open">open</a></strong>. You will need these
-to be able to <a href="../faq.html#upload">upload your submission</a> to the <a href="https:/submit.ioccc.org">IOCCC submit server</a>.</p>
+to be able to <a href="submit.html">upload your submission</a> when the contest is <a href="../status.html#open">open</a>.</p>
 <p>Once contest moves from <a href="../status.html#pending%22">pending</a> to <a href="../status.html#open">open</a> an announcement
 Email will be sent out to the mailing list of those have successfully registered for the IOCCC.
 In addition, an announcement will be made to the <a href="../news.html">IOCCC news</a> in case you miss
@@ -476,9 +476,7 @@ FAQ on “<a href="../faq.html#feedback">comment or make a suggestion on IOCCC r
 as well as the
 FAQ on “<a href="../faq.html#questions">best way to ask a question about the IOCCC rules, guideline and tools</a>”
 for how.</p>
-<p>See also the
-FAQ on “<a href="../faq.html#submit">how to submit</a>”
-for more information on the submission process when the IOCCC <a href="../status.html#open">reopens</a>.</p>
+<p>See also about how <a href="submit.html">upload your submission</a> when the contest is <a href="../status.html#open">open</a>.</p>
 <h3 id="when-the-ioccc-status-is-open">When the IOCCC status is <em>open</em></h3>
 <p>While the IOCCC status is <strong><a href="../status.html#open">OPEN</a></strong>,
 the <a href="rules.html">rules</a> and <a href="guidelines.html">guidelines</a> are <strong>OFFICIAL</strong>.</p>