Remove MySQL specific code from site generation code

- site-generator is generic, so no changes.
 - removed mysql information from site.cfg.
 - Updated template files to call sqlite queries directly.
 - Renamed the query files - remove sqlite from file names.
 - Deleted MySQL specific template files.

templates/content-episodes.tpl.html

@@ -1,5 +1,5 @@
  <!--% PROCESS 'shared-episode-summary.tpl.html' %-->
- <!--% PROCESS "queries-episodes-${constants.database}.tpl.html" %-->
+ <!--% PROCESS "queries-episodes.tpl.html" %-->
 <article>
     <header>
         <h1>Complete Archive of Shows.</h1>
@@ -7,7 +7,7 @@
         All this information is available to the public. Scrape if you wish but if we can format the data for you then we're happy to help.
         </p>
     </header>
-<!--% USE DBI(constants.driver, constants.user, constants.password) %-->
+<!--% USE DBI(constants.driver) %-->
 <!--% FOREACH episodes IN DBI.query(query_episodes) 
 %-->
 	<!--% show_summary(episodes) %-->