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.

2006/toledo2/.entry.json

@@ -51,7 +51,7 @@
 	},
 	{
 	    "file_path" : "2006_toledo2.tar.bz2",
-	    "inventory_order" : 100000,
+	    "inventory_order" : 1415926535,
 	    "OK_to_edit" : false,
 	    "display_as" : "tbz2",
 	    "display_via_github" : false,

2006/toledo2/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#MX">MX</a> - <em>United Mexican States</e
 <!-- 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 <a href="#alternate-code">alternate code</a> that is based on the author’s notes
 for DOS/Windows. This cannot be tested by us, not even to compile, but it appears
 that it should be fine, after the proper header files were added.</p>
@@ -150,12 +151,12 @@ that it should be fine, after the proper header files were added.</p>
 <pre><code>    STATUS: INABIAF - please **DO NOT** fix</code></pre>
 <p>For more detailed information see <a href="../../bugs.html#2006_toledo2">2006 toledo2 bugs</a>.</p>
 <h2 id="to-use">To use:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./toledo2</code></pre>
+<pre><code>    ./toledo2</code></pre>
 <p>To end execution press <code>ctrl-z</code>. As mentioned in the author’s remarks and in the
 below section, it is supposed to crash on termination though some noted this
 does not seem to happen in macOS or linux in 2023.</p>
 <h2 id="try">Try:</h2>
-<pre class="&lt;!---sh--&gt;"><code>    ./toledo2</code></pre>
+<pre><code>    ./toledo2</code></pre>
 <p>and then type in the following:</p>
 <pre><code>    10 PRINT &quot;HELLO WORLD!&quot;
     LIST
@@ -165,7 +166,7 @@ does not seem to happen in macOS or linux in 2023.</p>
 <p>This version, as noted, should work for DOS/Windows. It uses non-standard
 functions in place of <code>read(2)</code> and <code>write(2)</code>.</p>
 <h3 id="alternate-build">Alternate build:</h3>
-<pre class="&lt;!---sh--&gt;"><code>    make alt</code></pre>
+<pre><code>    make alt</code></pre>
 <h3 id="alternate-use">Alternate use:</h3>
 <p>The author noted that for PC/DOS you will have to add <code>ANSI.SYS</code> to your
 <code>CONFIG.SYS</code> but this is also something we can’t test.</p>
@@ -203,7 +204,7 @@ the very first volume of <a href="https://en.wikipedia.org/wiki/Dr._Dobb%27s_Jou
 Journal</a>.</p>
 <p>Type using uppercase letters. Here are three example programs. Press Enter after
 each line:</p>
-<pre class="&lt;!---basic--&gt;"><code>    10 PRINT &quot;Hello, world!&quot;
+<pre><code>    10 PRINT &quot;Hello, world!&quot;
     LIST
     RUN
 
@@ -236,7 +237,7 @@ from the <code>SOURCE</code> directory:</p>
 PIP.COM  STAT.COM  SUBMIT.COM XSUB.COM</code></pre>
 <p>To import them, you must run the emulator with an argument, by
 example:</p>
-<pre class="&lt;!---sh--&gt;"><code>    ./toledo2 DDT.COM</code></pre>
+<pre><code>    ./toledo2 DDT.COM</code></pre>
 <p>When the <code>&gt;</code> prompt appears, do:</p>
 <pre><code>    IMPORT DDT.COM</code></pre>
 <p>When it ends, do <code>HALT</code>, so the file is closed, and you can start
@@ -347,10 +348,10 @@ only one function.</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2006/toledo2/toledo2.alt.c">toledo2.alt.c</a> - alternative source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2006/toledo2/toledo2.orig.c">toledo2.orig.c</a> - original source</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2006/toledo2/KAYPROII.ZIP">KAYPROII.ZIP</a> - zip file of CPM related files</li>
-<li><a href="2006_toledo2.tar.bz2">2006_toledo2.tar.bz2</a> - download entry tarball</li>
 </ul>
 <h2 id="secondary-files">Secondary files</h2>
 <ul>
+<li><a href="2006_toledo2.tar.bz2">2006_toledo2.tar.bz2</a> - download entry tarball</li>
 <li><a href="index.html">index.html</a> - this web page</li>
 <li><a href="A">A</a> - binary support file</li>
 <li><a href="B">B</a> - binary support file</li>