(Hopefully) fix "http content inside https" problems

_layouts/index.html

@@ -7,8 +7,8 @@
     <link rel="stylesheet" type="text/css" href='css/style.css'/>
     <link rel="stylesheet" type="text/css" href='css/syntax.css'/>
     <link type="image/x-icon" rel="shortcut icon" href="favicon.ico"/>
-    <link href='http://fonts.googleapis.com/css?family=Arapey:400italic,400' rel='stylesheet' type='text/css'>
-    <link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=Arapey:400italic,400' rel='stylesheet' type='text/css'>
+    <link href='//fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
 
     <script type='text/javascript' src='/node_modules/es6-promise/dist/es6-promise.auto.js'></script>
     <script type='text/javascript' src='the.js'></script>
@@ -49,9 +49,9 @@
 
 
     <div id="social">
-        <a href="http://twitter.com/share" class="twitter-share-button" data-count="horizontal"
+        <a href="//twitter.com/share" class="twitter-share-button" data-count="horizontal"
            data-via="NicolasPetton">Tweet</a>
-        <script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script>
+        <script type="text/javascript" src="//platform.twitter.com/widgets.js"></script>
     </div>
 
     <div id="header">