Remove ruby dependency from website build

docs/templates/shared/_footer.html.j2

@@ -1,6 +1,6 @@
     <footer>
       <div class="container">
-        <p>This website is made with <a href="http://www.tinytree.info">Bonsai</a> and <a href="http://getbootstrap.com">Bootstrap</a>, themed with <a href="https://bootswatch.com">Bootswatch</a>.</p>
+        <p>This website is made with <a href="http://getbootstrap.com">Bootstrap</a>, themed with <a href="https://bootswatch.com">Bootswatch</a>.</p>
         <p>jq is licensed under the MIT license (code) and the <a href="https://creativecommons.org/licenses/by/3.0/">CC-BY-3.0</a> license (docs).</p>
       </div>
     </footer>

docs/templates/shared/_head.html.j2

@@ -7,9 +7,9 @@
     <title>{{headline}}</title>
     <meta name="viewport" content="width=device-width, initial-scale=1">
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />
-    <link rel="canonical" href="{{url}}{{permalink | remove:'/index'}}" />
+    <link rel="canonical" href="{{ url }}{{ permalink | replace('/index','') }}" />
     <link href="https://maxcdn.bootstrapcdn.com/bootswatch/3.3.5/spacelab/bootstrap.min.css" rel="stylesheet" integrity="sha256-j7Dtnd7ZjexEiPNbscbopFn9+Cs0b3TLipKsWAPHZIM= sha512-RFhfi6P8zWMAJrEGU+CPjuxPh3r/UUBGqQ+/o6WKPIVZmQqeOipGotH2ihRULuQ8wsMBoK15TSZqc/7VYWyuIw==" crossorigin="anonymous">
-    <link rel="stylesheet" href="{{root}}/css/base.css" type="text/css">
+    <link rel="stylesheet" href="{{ root }}/css/base.css" type="text/css">
     <!--[if lt IE 9]>
       <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
       <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>

docs/templates/shared/_navbar.html.j2

@@ -13,8 +13,8 @@
         <div class="navbar-collapse collapse" id="nav-collapse">
           <ul class="nav navbar-nav">
             {% for item in navigation %}
-              <li {% if item.permalink == permalink %} class="active" {% endif %}>
-                <a href="{{root}}{{item.permalink}}">{{item.name}}</a>
+              <li {% if item == permalink %} class="active" {% endif %}>
+                <a href="{{root}}/{{item}}">{{item | capitalize}}</a>
               </li>
             {% endfor %}
             <li><a href="https://github.com/stedolan/jq/issues">Issues</a></li>