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/queries-index.tpl.html

@@ -0,0 +1,58 @@
+<!--% query_next_available_episode = '
+    SELECT id, date FROM eps e WHERE id = (
+        SELECT  id + 1 FROM eps mo
+            WHERE NOT EXISTS (
+		SELECT NULL
+		FROM   eps mi
+		WHERE  mi.id = mo.id + 1
+            )
+        ORDER BY id
+        LIMIT 1) - 1
+    '
+%-->
+<!--% query_latest_episodes = '
+	WITH comment_tallies AS (
+		SELECT
+			eps_id,
+			COUNT(eps_id) AS eps_tally
+		FROM comments
+		GROUP BY eps_id
+	)
+	SELECT
+		eps.id,
+		eps.explicit,
+		eps.date, eps.license, eps.duration,
+		eps.title, eps.summary, eps.tags,
+		eps.notes,
+		hosts.local_image,
+		hosts.hostid,
+		hosts.host, hosts.email,
+		miniseries.name AS series, miniseries.id AS seriesid,
+		COALESCE (comment_tallies.eps_tally, 0) AS eps_tally
+	FROM eps
+	INNER JOIN hosts ON eps.hostid = hosts.hostid
+    INNER JOIN miniseries ON eps.series = miniseries.id
+    LEFT JOIN comment_tallies ON eps.id = comment_tallies.eps_id
+	WHERE eps.date <= date(\'now\')
+	ORDER BY eps.id + 0 DESC
+	LIMIT 10
+	'
+%-->
+<!--% query_last_5_weeks_episodes = '
+	SELECT
+        eps.id,
+	eps.explicit,
+        eps.date, eps.license, eps.title, eps.summary,
+		eps.duration, eps.notes, eps.tags,
+        hosts.hostid,
+        hosts.host, hosts.email, hosts.local_image,
+		miniseries.name AS series, miniseries.id AS seriesid
+    FROM eps
+	INNER JOIN hosts ON eps.hostid = hosts.hostid
+	INNER JOIN miniseries ON eps.series = miniseries.id
+	WHERE eps.date <= date(\'now\')
+    ORDER BY eps.id + 0 DESC
+	LIMIT 30 OFFSET 10
+	'
+%-->
+