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/endoh2/index.html

@@ -449,7 +449,7 @@ render for a larger terminal window? How about adding more glyphs?</p>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/prog.orig.c">prog.orig.c</a> - original source</li>
 <li><a href="bear.txt">bear.txt</a> - sample input</li>
 <li><a href="hello.txt">hello.txt</a> - sample input</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/try.sh">try.sh</a> - how to run</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/try.sh">try.sh</a> - script to try entry</li>
 <li><a href="yoda.txt">yoda.txt</a> - sample input</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/spoiler/code.c">spoiler/code.c</a> - SPOILER WARNING - main logic for the program</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/spoiler/gen.rb">spoiler/gen.rb</a> - SPOILER WARNING - compose items and prog.c</li>
@@ -462,7 +462,7 @@ render for a larger terminal window? How about adding more glyphs?</p>
 <ul>
 <li><a href="2020_endoh2.tar.bz2">2020_endoh2.tar.bz2</a> - download entry tarball</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/README.md">README.md</a> - markdown source for this web page</li>
-<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/.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/endoh2/.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/endoh2/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/.path">.path</a> - directory path from top directory</li>
 <li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2020/endoh2/spoiler/spoiler.md">spoiler/spoiler.md</a> - markdown source for spoiler/spoiler.html</li>