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`.

2005/index.html

@@ -214,32 +214,28 @@ Entries of 2005 - The 18th IOCCC</h1>
 <p><strong>Download IOCCC</strong> <a
 href="2005/ioccc.2005.tar.bz2">2005 entry source</a></p>
 <ul>
-<li><a href="2005/aidan/index.html">2005/aidan</a> - Most ingenious
-puzzle solution</li>
-<li><a href="2005/anon/index.html">2005/anon</a> - Best 3D puzzle</li>
-<li><a href="2005/boutines/index.html">2005/boutines</a> - Most
-superfluous output</li>
-<li><a href="2005/chia/index.html">2005/chia</a> - Most ambiguous
-language</li>
-<li><a href="2005/giljade/index.html">2005/giljade</a> - Best 2D
-puzzle</li>
-<li><a href="2005/jetro/index.html">2005/jetro</a> - Most sonorous
+<li><a href="aidan/index.html">2005/aidan</a> - Most ingenious puzzle
+solution</li>
+<li><a href="anon/index.html">2005/anon</a> - Best 3D puzzle</li>
+<li><a href="boutines/index.html">2005/boutines</a> - Most superfluous
 output</li>
-<li><a href="2005/klausler/index.html">2005/klausler</a> - Abuse of the
+<li><a href="chia/index.html">2005/chia</a> - Most ambiguous
+language</li>
+<li><a href="giljade/index.html">2005/giljade</a> - Best 2D puzzle</li>
+<li><a href="jetro/index.html">2005/jetro</a> - Most sonorous
+output</li>
+<li><a href="klausler/index.html">2005/klausler</a> - Abuse of the
 rules</li>
-<li><a href="2005/mikeash/index.html">2005/mikeash</a> - Best use of
+<li><a href="mikeash/index.html">2005/mikeash</a> - Best use of
 parenthesis</li>
-<li><a href="2005/mynx/index.html">2005/mynx</a> - Best use of the
-WWW</li>
-<li><a href="2005/persano/index.html">2005/persano</a> - Best of
-Show</li>
-<li><a href="2005/sykes/index.html">2005/sykes</a> - Best Emulator</li>
-<li><a href="2005/timwi/index.html">2005/timwi</a> - Most discourteous
+<li><a href="mynx/index.html">2005/mynx</a> - Best use of the WWW</li>
+<li><a href="persano/index.html">2005/persano</a> - Best of Show</li>
+<li><a href="sykes/index.html">2005/sykes</a> - Best Emulator</li>
+<li><a href="timwi/index.html">2005/timwi</a> - Most discourteous
 interpreter</li>
-<li><a href="2005/toledo/index.html">2005/toledo</a> - Best Game</li>
-<li><a href="2005/vik/index.html">2005/vik</a> - Most circuitous
-walk</li>
-<li><a href="2005/vince/index.html">2005/vince</a> - Most beauteous
+<li><a href="toledo/index.html">2005/toledo</a> - Best Game</li>
+<li><a href="vik/index.html">2005/vik</a> - Most circuitous walk</li>
+<li><a href="vince/index.html">2005/vince</a> - Most beauteous
 visuals</li>
 </ul>
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