Several manifest updates

Changed 'description of entry in JSON' to 'entry summary and manifest in
JSON'.

Changed 'how to run' (for try scripts) to 'script to try entry'.

Changed 'how to run if you have the primes utility' to 'script to try
entry if you have the primes utility'.

Changed 'how to run alternative code' to 'script to try alternative
code'.

A number of other more specific (to particular entries or maybe even a
single entry, 2019/ciura if not any others) descriptions were also
changed.

Rebuilt index.html and .entry.json files.

2020/ferguson1/index.html

@@ -905,7 +905,7 @@ email but I’m more likely to respond to mastodon messages.</p>
 <li><a href="chocolate-cake.html">chocolate-cake.html</a> - double-layered chocolate fudge cake recipe</li>
 <li><a href="crazy.log.html">crazy.log.html</a> - about some screen dumps</li>
 <li><a href="gameplay.html">gameplay.html</a> - how to play the game</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/play.sh">play.sh</a> - how to run</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/play.sh">play.sh</a> - script to try entry</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/snake-colours.sh">snake-colours.sh</a> - script to reset - preset colors</li>
 <li><a href="spoilers.html">spoilers.html</a> - SPOILER ALERT - about the code</li>
 <li><a href="terminals.html">terminals.html</a> - terminal capabilities and dimensions and colors</li>
@@ -927,7 +927,7 @@ email but I’m more likely to respond to mastodon messages.</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/cannibalism.log.md">cannibalism.log.md</a> - markdown source for cannibalism.log.html</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/chocolate-cake.md">chocolate-cake.md</a> - markdown source for chocolate-cake.html</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/crazy.log.md">crazy.log.md</a> - markdown source for crazy.log.html</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/.entry.json">.entry.json</a> - description of entry in JSON</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/.entry.json">.entry.json</a> - entry summary and manifest in JSON</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/gameplay.md">gameplay.md</a> - markdown source for gameplay.html</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/ferguson1/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
 <li><a href="ioccc-cake.jpg">ioccc-cake.jpg</a> - image for chocolate cake</li>