add rules, guidelines, fix HTML code, move compressed tarball in inventory

By changing the _inventory_order_ of the compressed tarball from
**100000** to **1415926535**, the compressed tarball will land at
the top of the secondary file list and remain still easy to find.

Updated the `manifest.numbers` spreadsheet and rebuilt
the `.entry.json` files.

Added `next/` directory to hold the next IOCCC rules and guidelines.
Added `next/README.md` that `bin/gen-top-html.sh` uses to form
the `next/index.html` file.

Added _Rules and Guidelines_ link to the sidenav bar to link to the
`next/index.html` file.

Added _IOCCC Rules_ as `next/rules.md` that `bin/gen-top-html.sh`
uses to form the `next/rules.html` file.

Added _IOCCC Guidelines_ as `next/guidelines.md` that `bin/gen-top-html.sh`
uses to form the `next/guidelines.html` file.

Changed `bin/gen-top-html.sh` VERSION from "1.2.4 2024-04-13"
to "1.3 2024-04-14".

Prevent `pandoc(1)` from interpreting the commented out language
of a markdown code block as a code class.  So a markdown such as:

````
``` <!---sh-->
...
```
````

that produced HTML of the form:

```html
<pre class="&lt;!---sh--&gt;"><code>...</code></pre>
```

will now produce HTML of the form:

```html
<pre><code>...</code></pre>
```

NOTE: Before when the language of a markdown code block
was not commented, the HTML produced by `pandoc(1)` was
oddly indented with extra whitespace on the first line
of the code block.  While commenting out the language
of the code block removed some of the odd intending,
it left a weird class in the HTML pre block that
surrounded the HTML code block.  This hack prevents
`pandoc(1)` from assigning a class to the HTML pre block.

Changed `in/md2html.sh` VERSION from "1.2.1 2024-04-13"
to "1.3 2024-04-14".

Added `make gen_sitemap` to end of both `make www` and `make
quick_www` in top level Makefile.

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

**IMPORTANT NOTE**: The current `next/rules.md` and `next/guidelines.md`
are simply the 2020 IOCCC Rules and Guidelines converted into
markdown form.  There are **NOT** the Rules and Guidelines that
will be used the IOCCC MOCK, nor the next IOCCC.

TODO: Improve the `bin/gen-status.sh` tool to modify the top of the
      `next/rules.md` and `next/guidelines.md` files to keep them
      in sync with the _contest_status_ as found in `status.json`.

TODO: Improve the look and feel of the `next/rules.md` and
      `next/guidelines.md` markdown files.

2004/jdalbec/.entry.json

@@ -59,7 +59,7 @@
 	},
 	{
 	    "file_path" : "2004_jdalbec.tar.bz2",
-	    "inventory_order" : 100000,
+	    "inventory_order" : 1415926535,
 	    "OK_to_edit" : false,
 	    "display_as" : "tbz2",
 	    "display_via_github" : false,

2004/jdalbec/index.html

@@ -88,6 +88,7 @@
     <div class="sidenav">
       <a href="../../news.html">IOCCC News</a>
       <a href="../../status.html">Contest status</a>
+      <a href="../../next/index.html">Rules and Guidelines</a>
       <a href="../../faq.html#submit">How to enter the IOCCC</a>
       <a href="../../faq.html">FAQ</a>
     </div>
@@ -141,7 +142,7 @@ Location: <a href="../../location.html#US">US</a> - <em>United States of America
 <!-- START: this line starts content for HTML phase 21 by: bin/pandoc-wrapper.sh via bin/md2html.sh -->
 
 <h2 id="to-build">To build:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    make</code></pre>
+<pre><code>    make</code></pre>
 <p>There is an alternate version that allows one to control the number of numbers
 to print on a line. See <a href="#alternate-code">alternate code</a> below.</p>
 <h3 id="bugs-and-misfeatures">Bugs and (Mis)features:</h3>
@@ -149,27 +150,27 @@ to print on a line. See <a href="#alternate-code">alternate code</a> below.</p>
 <pre><code>    STATUS: INABIAF - please **DO NOT** fix</code></pre>
 <p>For more detailed information see <a href="../../bugs.html#2004_jdalbec">2004 jdalbec bugs</a>.</p>
 <h2 id="to-use">To use:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./jdalbec number ...</code></pre>
+<pre><code>    ./jdalbec number ...</code></pre>
 <h2 id="try">Try:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./try.sh</code></pre>
+<pre><code>    ./try.sh</code></pre>
 <h2 id="alternate-code">Alternate code:</h2>
 <p>This version lets you control how many numbers to show on a line before adding a
 newline as it can be harder to see when there are a lot of numbers. For lines
 that don’t end up having too many line breaks it also makes it easier to see
 which line it is on.</p>
 <h3 id="alternate-build">Alternate build:</h3>
-<pre class="&lt;!---sh--&gt;"><code>    make alt</code></pre>
+<pre><code>    make alt</code></pre>
 <p>The macro <code>Ag</code> (<a href="https://en.wikipedia.org/wiki/Silver">silver</a>) controls how
 many number of lines to print on a line. Set at default to 11 protons, salt, if
 you wish to make it silver, 47 (a prime) protons, do:</p>
-<pre class="&lt;!---sh--&gt;"><code>    make clobber Ag=47 alt</code></pre>
+<pre><code>    make clobber Ag=47 alt</code></pre>
 <p>though it might be odd to have 47 numbers on a line as it would defeat the
 purpose. :-) Or if you prefer some prime, golden irony:</p>
-<pre class="&lt;!---sh--&gt;"><code>    make clobber Ag=79 alt</code></pre>
+<pre><code>    make clobber Ag=79 alt</code></pre>
 <h3 id="alternate-use">Alternate use:</h3>
 <p>Use <code>jdalbec.alt</code> as you would <code>jdalbec</code> above.</p>
 <h3 id="alternate-try">Alternate try:</h3>
-<pre class="&lt;!---sh--&gt;"><code>    ./try.alt.sh</code></pre>
+<pre><code>    ./try.alt.sh</code></pre>
 <h2 id="judges-remarks">Judges’ remarks:</h2>
 <p>We still aren’t sure whether or not this is a useful program, but
 it’s the first atomic fission we’ve seen in the IOCCC.</p>
@@ -325,10 +326,10 @@ type, a structure, a structure member, a macro parameter, and a variable.).</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/jdalbec/jdalbec.orig.c">jdalbec.orig.c</a> - original source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/jdalbec/try.alt.sh">try.alt.sh</a> - how to run alternative code</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/jdalbec/try.sh">try.sh</a> - how to run</li>
-<li><a href="2004_jdalbec.tar.bz2">2004_jdalbec.tar.bz2</a> - download entry tarball</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>
+<li><a href="2004_jdalbec.tar.bz2">2004_jdalbec.tar.bz2</a> - download entry tarball</li>
 <li><a href="index.html">index.html</a> - this web page</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/jdalbec/README.md">README.md</a> - markdown source for this web page</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2004/jdalbec/.entry.json">.entry.json</a> - description of entry in JSON</li>