Finishing off 'query2*' scripts

Database/hosts_list.tpl, Database/hosts_showcount.sqlite.sql: examples
    of using 'query2tt2'

Database/query2csv, Database/query2json, Database/query2tt2: minor bug
    fix relating to '-dbarg=ARG' option

Database/hosts_list.tpl

@@ -0,0 +1,39 @@
+[%# ==========================================================================
+This is the TT2 file for making a list of hosts contributing to HPR in the
+    current year which is run in conjunction with 'query2tt2'. It's invoked
+    thus:
+        year="2022" # or whatever
+        ./query2tt2 -query=$HOME/HPR/Community_News/hosts_showcount.sql \
+            -conf=$HOME/HPR/.hpr_livedb.cfg \
+            -dbargs "${year}-01-01" -dbargs "${year}-12-31" -def year=${year} \
+            -template=$HOME/HPR/Community_News/hosts_list.tpl \
+            > $HOME/HPR/Community_News/hosts_showcount_${year}.html
+
+    [We can't use the planned pure TT2 version since Template::Plugin::DBI
+    can't run over the SSH tunnel.]
+
+2023-10-30 The correspondent URL has changed with the static site, and needs
+the hostid to be zero-padded.
+========================================================================== -%]
+[%- USE date -%]
+[%- DEFAULT
+    year = date.format(date.now,'%Y','UTC')
+-%]
+<h3>Thanks to all [% result.size %] HPR contributors in [% year %]!</h3>
+
+[% limit = 8 -%]
+[% count = 0 -%]
+<p><ul><li>
+[% FOREACH h = result -%]
+<a href="https://hackerpublicradio.org/correspondents/[% h.hostid %].html">[% h.hostname %]</a>
+[%- IF loop.count mod limit == 0 || loop.count == result.size -%].[% ELSE %],[% END %]
+[% count = count + 1 -%]
+[% IF count == limit -%]
+[% count = 0 -%]
+</li><li>
+[% END -%]
+[% END -%]
+</li></ul></p>
+[%#
+  # vim: syntax=tt2:ts=8:sw=4:ai:et:tw=78:fo=tcrqn21:fdm=marker
+-%]