Use HTTPS links

templates/inc/footer.tpl

@@ -2,7 +2,7 @@
 <footer class="small-font">
     <div class="footer_wrapper">
         {$dev="<a rel='author' target='blank'
-            href='http://rudloff.pro/'>
+            href='https://rudloff.pro/'>
             Pierre Rudloff
         </a>"}
         {t params=['@dev'=>$dev]}Code by @dev{/t}
@@ -10,7 +10,7 @@
         &middot;
 
         {$designer="<a rel='author' target='blank'
-            href='http://olivierhaquette.fr'>
+            href='https://ographik.fr/'>
             Olivier Haquette
         </a>"}
         {t params=['@designer' => $designer]}Design by @designer{/t}
@@ -23,7 +23,7 @@
 
         &middot;
 
-        {$youtubedl="<a href='http://ytdl-org.github.io/youtube-dl/'>
+        {$youtubedl="<a href='https://ytdl-org.github.io/youtube-dl/'>
             youtube-dl
         </a>"}
         {t params=['@youtubedl'=>$youtubedl]}Based on @youtubedl{/t}

templates/index.tpl

@@ -11,7 +11,7 @@
         <span class="URLinput_wrapper">
             <!-- We used to have an autofocus attribute on this field but it triggerd a very specific CSS bug: https://github.com/Rudloff/alltube/issues/117 -->
             <input class="URLinput large-font" type="url" name="url" id="url"
-                   required placeholder="http://example.com/video"/>
+                   required placeholder="https://example.com/video"/>
         </span>
             {if $config->uglyUrls}
                 <input type="hidden" name="page" value="info"/>

templates/info.tpl

@@ -1,6 +1,6 @@
 {include file="inc/head.tpl"}
 <div class="wrapper">
-    <div itemscope itemtype="http://schema.org/VideoObject">
+    <div itemscope itemtype="https://schema.org/VideoObject">
         <main class="main">
             {include file="inc/logo.tpl"}
             {$title="<i itemprop='name'>