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
```

status.html

@@ -468,7 +468,7 @@ been released.</p>
 <p>You may <a href="next/register.html">register for the IOCCC</a> while the contest is <a href="#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="#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="next/submit.html">upload your submission</a> to the <a href="https:/submit.ioccc.org">IOCCC submit server</a>.</p>
 <p>Once contest moves from <a href="#pending%22">pending</a> to <a href="#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
@@ -483,11 +483,11 @@ 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>”
+FAQ on “<a href="next/submit.html">how to upload your submission</a>”
 for more information on the submission process when the IOCCC <a href="#open">reopens</a>.</p>
 <h4 id="open">“<strong>open</strong>”</h4>
 <p>While contest is <strong><a href="#open">OPEN</a></strong>, those who have <a href="next/register.html">registered for the IOCCC</a>
-may <a href="faq.html#upload">upload their submissions</a> to the <a href="https://submit.ioccc.org">IOCCC submit server</a>.</p>
+may <a href="next/submit.html">upload their submissions</a> to the <a href="https://submit.ioccc.org">IOCCC submit server</a>.</p>
 <p>See the
 FAQ on “<a href="faq.html#submit">how to submit</a>”
 for more information.</p>
@@ -506,7 +506,7 @@ FAQ on “<a href="faq.html#submit">how to submit</a>”
 for more information on the submission process when the IOCCC <a href="#open">reopens</a>.</p>
 <h4 id="judging">“<strong>judging</strong>”</h4>
 <p>While contest is <strong>[JUDGING][#jugding]</strong>, you cannot <a href="next/register.html">register</a>
-nor can you <a href="faq.html#upload">upload submissions</a>. This is because the
+nor can you <a href="next/submit.html">upload submissions</a>. This is because the
 <a href="judges.html">IOCCC judges</a> are in the process of judging the <a href="faq.html#how_many">submissions</a>
 they received while the contest was <a href="#open">open</a>.</p>
 <p>Watch the <a href="https://fosstodon.org/@ioccc"><span class="citation" data-cites="IOCCC">@IOCCC</span> mastodon feed</a> for updates.</p>
@@ -528,7 +528,7 @@ winning entries page</a>.</p></li>
 </ul>
 <h4 id="closed">“<strong>closed</strong>”</h4>
 <p>While contest is <strong>[CLOSED][#closed]</strong>, you cannot <a href="next/register.html">register</a>
-nor can you <a href="faq.html#upload">upload submissions</a>. You have to wait for the
+nor can you <a href="next/submit.html">upload submissions</a>. You have to wait for the
 next contest to <a href="#open">open</a>.</p>
 <p>See the <a href="years.html">IOCCC winning entries page</a> for the entries that have won
 the <a href="index.html">IOCCC</a>.</p>