Fixed cdn import should using relative protocol

Author: jackycute

public/views/head.ejs

@@ -9,7 +9,7 @@
 <link rel="apple-touch-icon" href="/apple-touch-icon.png">
 <% if(useCDN) { %>
 <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
-<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
+<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
 <link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-social/4.9.0/bootstrap-social.min.css">
 <% } else { %>
 <link rel="stylesheet" href="/vendor/bootstrap/dist/css/bootstrap.min.css">

public/views/pretty.ejs

@@ -12,8 +12,8 @@
     <link rel="icon" type="image/png" href="<%- url %>/favicon.png">
 	<link rel="apple-touch-icon" href="<%- url %>/apple-touch-icon.png">
 	<% if(useCDN) { %>
-	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
-    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
+	<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
+    <link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
 	<% } else { %>
 	<link rel="stylesheet" href='<%- url %>/vendor/bootstrap/dist/css/bootstrap.min.css'>
     <link rel="stylesheet" href='<%- url %>/vendor/font-awesome/css/font-awesome.min.css'>
@@ -51,8 +51,8 @@
 
 </html>
 <% if(useCDN) { %>
-<script src="https://code.jquery.com/jquery-1.11.3.min.js" defer></script>
-<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" defer></script>
+<script src="//code.jquery.com/jquery-1.11.3.min.js" defer></script>
+<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js" defer></script>
 <% } else { %>
 <script src="<%- url %>/vendor/jquery/dist/jquery.min.js" defer></script>
 <script src="<%- url %>/vendor/bootstrap/dist/js/bootstrap.min.js" defer></script>