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`.

Makefile

@@ -55,6 +55,7 @@ GEN_YEARS= bin/gen-years.sh
 GEN_YEAR_INDEX= bin/gen-year-index.sh
 CHK_ENTRY= bin/chk-entry.sh
 GEN_TOP_MD2HTML= bin/gen-top-md2html.sh
+GEN_OTHER_HTML= bin/gen-other-html.sh
 README2INDEX= bin/readme2index.sh
 QUICK_README2INDEX= bin/quick-readme2index.sh
 TAR_ENTRY= bin/tar-entry.sh
@@ -239,7 +240,7 @@ indent.c:
 #	They might not even work (right now).  :-)
 
 .PHONY: help genpath genfilelist verify_entry_files gen_authors gen_location gen_years \
-	entry_index gen_top_md2html quick_entry_index \
+	entry_index gen_top_md2html gen_other_html quick_entry_index \
 	form_entry_tarball form_year_tarball form_all_tarball \
 	gen_year_index quick_www www
 
@@ -258,6 +259,7 @@ help:
 	@echo make gen_years
 	@echo make entry_index
 	@echo make gen_top_md2html
+	@echo make gen_other_html
 	@echo make gen_year_index
 	@echo make quick_entry_index
 	@echo make form_entry_tarball
@@ -354,6 +356,13 @@ gen_top_md2html: ${GEN_TOP_MD2HTML}
 	${GEN_TOP_MD2HTML} -v 1
 	@echo '=-=-=-=-= IOCCC complete make $@ =-=-=-=-='
 
+# generate build entry HTML files from markdown other than README.md to index.html HTML files
+#
+gen_other_html: ${GEN_OTHER_HTML}
+	@echo '=-=-=-=-= IOCCC begin make $@ =-=-=-=-='
+	${GEN_OTHER_HTML} -v 1
+	@echo '=-=-=-=-= IOCCC complete make $@ =-=-=-=-='
+
 # generate year level index.html files using the
 # ${GEN_YEAR_INDEX} tool (bin/gen-year-index.sh).
 #
@@ -420,12 +429,13 @@ quick_www:
 	${MAKE} clobber
 	${MAKE} genpath
 	${MAKE} genfilelist
-	-${MAKE} verify_entry_files # XXX - remove - when all files exist
+	${MAKE} verify_entry_files
 	${MAKE} gen_authors
 	${MAKE} gen_location
 	${MAKE} gen_years
 	${MAKE} gen_year_index
 	${MAKE} gen_top_md2html
+	${MAKE} gen_other_html
 	${MAKE} quick_entry_index
 	@echo XXX - disable tarball updates until mods settle down - XXX - ${MAKE} form_entry_tarball
 	@echo XXX - disable tarball updates until mods settle down - XXX - ${MAKE} form_year_tarball
@@ -441,12 +451,13 @@ www:
 	${MAKE} clobber
 	${MAKE} genpath
 	${MAKE} genfilelist
-	-${MAKE} verify_entry_files # XXX - remove - when all files exist
+	${MAKE} verify_entry_files
 	${MAKE} gen_authors
 	${MAKE} gen_location
 	${MAKE} gen_years
 	${MAKE} gen_year_index
 	${MAKE} gen_top_md2html
+	${MAKE} gen_other_html
 	${MAKE} entry_index
 	@echo XXX - disable tarball updates until mods settle down - XXX - ${MAKE} form_entry_tarball
 	@echo XXX - disable tarball updates until mods settle down - XXX - ${MAKE} form_year_tarball