build missing HTML files for entries

Setup a simple topnav for missing HTML files for entries.

Added `bin/gen-other-html.sh` to build entry HTML files from
markdown other than README.md to index.html HTML files.

Fixed duplicate link text in `2020/ferguson1/gameplay.md`.

Improved `inc/md2html.cfg` to support building the missing HTML
files for entries.

Added `make gen_other_html` to top level Makefile.
Added `make gen_other_html` to `make quick_www` and `make www`.

Fixed inventory links for year level index.html files.
Changed `bin/output-year-index.sh` VERSION from "1.0.1 2024-02-23"
to "1.1 2024-02-27".

Added missing lines in `manifest.numbers`.  Update the affected
`.entry.json` files.

The manifest (in both `manifest.numbers` and the collection of
manifests from of all entry `.entry.json` files) now match.  Errors
from `make verify_entry_files` will now abort both `make quick_www`
and `make www` rules in the top level `Makefile`.

Changed markdown files in manifest to have an _inventory_order_ of
_2000000000_ so that the `index.html` file will usually appear at
the start of the _Secondary files_ set for the "#inventory" section
of an entry's `index.html` file.

Changed compressed tar files (files that end in _.tar.bz2_) in
manifest to have an _inventory_order_ of _100000_ so that these
files will usually appear at the end of the _Primary files_ set for
the "#inventory" section of an entry's `index.html` file.

Added 'Jump to top` link above the _Primary files_ section.
Changed `bin/output-index-inventory.sh` VERSION from "1.1.1 2024-02-23"
to "1.2 2024-02-27".

Updated HTML files to perform the above via `make www`.

1992/index.html

@@ -205,28 +205,24 @@ Entries of 1992 - The 9th IOCCC</h1>
 <p><strong>Download IOCCC</strong> <a
 href="1992/ioccc.1992.tar.bz2">1992 entry source</a></p>
 <ul>
-<li><a href="1992/adrian/index.html">1992/adrian</a> - Most
-Educational</li>
-<li><a href="1992/albert/index.html">1992/albert</a> - Most Useful
+<li><a href="adrian/index.html">1992/adrian</a> - Most Educational</li>
+<li><a href="albert/index.html">1992/albert</a> - Most Useful
 Program</li>
-<li><a href="1992/ant/index.html">1992/ant</a> - Best Utility</li>
-<li><a href="1992/buzzard.1/index.html">1992/buzzard.1</a> - Most
-Obfuscated Algorithm</li>
-<li><a href="1992/buzzard.2/index.html">1992/buzzard.2</a> - Best
-Language Tool</li>
-<li><a href="1992/gson/index.html">1992/gson</a> - Most Humorous
-Output</li>
-<li><a href="1992/imc/index.html">1992/imc</a> - Best Output</li>
-<li><a href="1992/kivinen/index.html">1992/kivinen</a> - Best X
-Program</li>
-<li><a href="1992/lush/index.html">1992/lush</a> - Worst Abuse of the C
+<li><a href="ant/index.html">1992/ant</a> - Best Utility</li>
+<li><a href="buzzard.1/index.html">1992/buzzard.1</a> - Most Obfuscated
+Algorithm</li>
+<li><a href="buzzard.2/index.html">1992/buzzard.2</a> - Best Language
+Tool</li>
+<li><a href="gson/index.html">1992/gson</a> - Most Humorous Output</li>
+<li><a href="imc/index.html">1992/imc</a> - Best Output</li>
+<li><a href="kivinen/index.html">1992/kivinen</a> - Best X Program</li>
+<li><a href="lush/index.html">1992/lush</a> - Worst Abuse of the C
 Preprocessor</li>
-<li><a href="1992/marangon/index.html">1992/marangon</a> - Best
-Game</li>
-<li><a href="1992/nathan/index.html">1992/nathan</a> - Worst Abuse of
-the Rules</li>
-<li><a href="1992/vern/index.html">1992/vern</a> - Best of Show</li>
-<li><a href="1992/westley/index.html">1992/westley</a> - Best Small
+<li><a href="marangon/index.html">1992/marangon</a> - Best Game</li>
+<li><a href="nathan/index.html">1992/nathan</a> - Worst Abuse of the
+Rules</li>
+<li><a href="vern/index.html">1992/vern</a> - Best of Show</li>
+<li><a href="westley/index.html">1992/westley</a> - Best Small
 Program</li>
 </ul>
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