Fix #4 - Update some links to HTTPS

Signed-off-by: William Desportes <williamdes@wdes.fr>

theme/index.html.tmpl

@@ -205,7 +205,7 @@ Planet phpMyAdmin aggregates blogs of following phpMyAdmin contributors.
 		<a href="foafroll.xml"><img class="button" src="images/foaf.png" width="80" height="15" alt="[FOAF Subscriptions]"></a>
 
 		<a href="opml.xml"><img class="button" src="images/opml.png" width="80" height="15" alt="[OPML Subscriptions]"></a>
-		<a href="http://www.intertwingly.net/code/venus/"><img class="button" src="images/venus.png" width="80" height="15" alt="[Venus]"></a>
+		<a href="https://www.intertwingly.net/code/venus/"><img class="button" src="images/venus.png" width="80" height="15" alt="[Venus]"></a>
 </p>
 
 <h3>Planetarium</h3>
@@ -214,9 +214,9 @@ Planet phpMyAdmin aggregates blogs of following phpMyAdmin contributors.
 <li><a href="http://www.planet-php.net/">Planet PHP</a></li>
 <li><a href="https://planet.mysql.com/">Planet MySQL</a></li>
 <li><a href="http://www.planetapache.org/">Planet Apache</a></li>
-<li><a href="http://planet.debian.net/">Planet Debian</a></li>
+<li><a href="https://planet.debian.org/">Planet Debian</a></li>
 <li><a href="https://planet.freedesktop.org/">Planet freedesktop.org</a></li>
-<li><a href="http://planet.gnome.org/">Planet GNOME</a></li>
+<li><a href="https://planet.gnome.org/">Planet GNOME</a></li>
 <li><a href="http://www.planetsuse.org/">Planet SUSE</a></li>
 <li><a href="http://fedora.linux.duke.edu/fedorapeople/">Fedora People</a></li>
 <li><a href="http://www.planetplanet.org/">more...</a></li>