Use https for 15 years page

Signed-off-by: Michal Čihař <michal@cihar.com>

Author: nijel

pmaweb/templates/15-years.html

@@ -3,7 +3,7 @@
 
 {% block content %}
 
-<h2> The <a href="http://www.phpmyadmin.net">phpMyAdmin</a> project is thrilled to celebrate fifteen years of phpMyAdmin </h2>
+<h2> The <a href="https://www.phpmyadmin.net">phpMyAdmin</a> project is thrilled to celebrate fifteen years of phpMyAdmin </h2>
 
 <p>
 The phpMyAdmin project was &ldquo;born&rdquo; on the 9th of September, 1998, when
@@ -27,7 +27,7 @@ <h2> The <a href="http://www.phpmyadmin.net">phpMyAdmin</a> project is thrilled
 </p>
 
 <p>Please join us in celebrating fifteen years of phpMyAdmin! Please send us your
-success stories, preferably using the Sourceforge <a href="http://sourceforge.net/projects/phpmyadmin/#reviews">review form</a>
+success stories, preferably using the Sourceforge <a href="https://sourceforge.net/projects/phpmyadmin/#reviews">review form</a>
 or by:
 <ul>
 <li>Tweeting <code>@phpmya</code> and/or using the <code>#pma15</code> hashtag</li>
@@ -42,8 +42,8 @@ <h2> The <a href="http://www.phpmyadmin.net">phpMyAdmin</a> project is thrilled
 <li>Codebase size: 508,761 lines</li>
 <li>Number of overall contributors: 669</li>
 <li>Members of development team: 9</li>
-<li><a href="http://www.openhub.net/p/phpmyadmin/estimated_cost">Estimated effort</a>: 136 person-years</li>
-<li><a href="http://www.openhub.net/p/phpmyadmin/estimated_cost">Estimated cost:</a>: $7,485,316</li>
+<li><a href="https://www.openhub.net/p/phpmyadmin/estimated_cost">Estimated effort</a>: 136 person-years</li>
+<li><a href="https://www.openhub.net/p/phpmyadmin/estimated_cost">Estimated cost:</a>: $7,485,316</li>
 <li>Number of translations: 72</li>
 </ul>
 </p>
@@ -59,7 +59,7 @@ <h2> The <a href="http://www.phpmyadmin.net">phpMyAdmin</a> project is thrilled
 </p>
 
 <p name="openhub">
-<sup>1</sup> &#8211; These analyses provided by <a href="http://www.openhub.net/p/phpmyadmin">Open HUB</a> by Black Duck.
+<sup>1</sup> &#8211; These analyses provided by <a href="https://www.openhub.net/p/phpmyadmin">Open HUB</a> by Black Duck.
 </p>
 
  {% endblock %}