Change website scripts to use jstrencode

After the swap in the jparse repo of jstrencode and jstrdecode, due to
mix-up in terminology, originally in the mkiocccentry repo, the website
tools that used jstrdecode now have to use jstrencode, with a minimum
version of 2.0.0.

The scripts have been updated to do this. After doing a make install
from the jparse repo I did a make www with no html files changed. Then
doing the same thing after make install from the mkiocccentry/jparse
directory, no changes were made either, indicating that all should be
okay.

The bin/index.html was however modified to refer to jstrencode, not
jstrdecode.

bin/index.html

@@ -889,8 +889,8 @@ or if not found, the <code>JSONPath.sh(1)</code> tool from the recently forked a
     bin/jval-wrapper.sh -b -q 1984/mullender/.entry.json &#39;$.manifest[2].inventory_order&#39;
 
     bin/jval-wrapper.sh author/Anton_Algmyr.json &#39;$.full_name&#39;
-    bin/jval-wrapper.sh -q -T author/Anton_Algmyr.json &#39;$.full_name&#39; | jstrdecode -</code></pre>
-<p><strong>NOTE</strong>: With <code>jstrdecode(1)</code> version 1.2.3 or better, one can use <code>jstrdecode -N</code>
+    bin/jval-wrapper.sh -q -T author/Anton_Algmyr.json &#39;$.full_name&#39; | jstrencode -</code></pre>
+<p><strong>NOTE</strong>: With <code>jstrencode(1)</code> version 1.2.3 or better, one can use <code>jstrencode -N</code>
 and not have to use <code>-T</code> with <code>bin/jval-wrapper.sh</code>.</p>
 <div id="manifest-csv-entry">
 <h3 id="manifest.csv.entry.awk"><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/bin/manifest.csv.entry.awk">manifest.csv.entry.awk</a></h3>