Merge branch 'twbs/v4-dev' into dropdown-keyboard

6 files changed, 86 insertions, 54 deletions

diff --git a/docs/_includes/ads.html b/docs/_includes/ads.html
index ba4775f5e..662b62971 100644
--- a/docs/_includes/ads.html
+++ b/docs/_includes/ads.html
@@ -1 +1 @@
-<div id="carbonads-container"><div class="carbonad"><div id="azcarbon"></div><script>var z = document.createElement("script"); z.async = true; z.src = "http://engine.carbonads.com/z/32341/azcarbon_2_1_0_HORIZ"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(z, s);</script></div></div>
+<script async type="text/javascript" src="https://cdn.carbonads.com/carbon.js?zoneid=1673&serve=C6AILKT&placement=getbootstrapcom" id="_carbonads_js"></script>
diff --git a/docs/_includes/header.html b/docs/_includes/header.html
index 51b3cda8b..11076af46 100644
--- a/docs/_includes/header.html
+++ b/docs/_includes/header.html
@@ -1,17 +1,17 @@
 <meta charset="utf-8">
 <meta http-equiv="X-UA-Compatible" content="IE=edge">
 <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
-<meta name="description" content="Bootstrap, a sleek, intuitive, and powerful mobile first front-end framework for faster and easier web development.">
-<meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
 
 <title>
-  {% if page.layout == "home" %}
-    {{ page.title }}
+  {% if page.title %}
+    {{ page.title }} &middot; {{ site.title }}
   {% else %}
-    {{ page.title }} &middot; Bootstrap
+    {{ site.title }} &middot; {{ site.description }}
   {% endif %}
 </title>
 
+{% include social.html %}
+
 <!-- Bootstrap core CSS -->
 {% if site.github %}
   <link href="{{ site.baseurl }}/dist/css/bootstrap.min.css" rel="stylesheet">
@@ -30,7 +30,7 @@
   (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
   (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
   m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-  })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
   ga('create', 'UA-146052-10', 'getbootstrap.com');
   ga('send', 'pageview');
 </script>
diff --git a/docs/_includes/nav-docs.html b/docs/_includes/nav-docs.html
index b4f4d1f9e..2b44c8acc 100644
--- a/docs/_includes/nav-docs.html
+++ b/docs/_includes/nav-docs.html
@@ -4,36 +4,33 @@
 </form>
 
 <nav class="bd-links" id="docsNavbarContent">
+  {% assign page_slug = page.url | split: '/' | last %}
   {% for group in site.data.nav %}
   {% assign link = group.pages | first %}
-  {% assign slug = group.title | downcase | replace: ' ', '-' || page.title | downcase | replace: ' ', '-' %}
+  {% assign link_slug = link.title | slugify %}
+  {% assign group_slug = group.title | slugify %}
   {% assign active = nil %}
 
-  {% if page.url contains slug %}
+  {% if page.group == group_slug %}
     {% assign active = 'active' %}
   {% endif %}
 
   <div class="bd-toc-item {{ active }}">
-    {% if slug == "examples" %}
-        <a class="bd-toc-link" href="{{ site.baseurl }}/{{ group.title | downcase | replace: ' ', '-' }}/">
-      {% else %}
-        <a class="bd-toc-link" href="{{ site.baseurl }}/{{ group.title | downcase | replace: ' ', '-' }}/{{ link.title | downcase | replace: ' ', '-' || page.title | downcase | replace: ' ', '-'  }}">
-      {% endif %}
+      <a class="bd-toc-link" href="{{ site.baseurl }}/{{ group_slug }}/{{ link_slug }}{% if link_slug %}/{% endif %}">
         {{ group.title }}
       </a>
 
       <ul class="nav bd-sidenav">
         {% for doc in group.pages %}
-          {% assign slug = doc.title | downcase | replace: ' ', '-' | replace:'-&-','-' %}
-          {% capture slug %}/{{ slug }}{% endcapture %}
+          {% assign doc_slug = doc.title | slugify %}
           {% assign active = nil %}
 
-          {% if page.url contains slug %}
+          {% if page.group == group_slug and page_slug == doc_slug %}
             {% assign active = 'active bd-sidenav-active' %}
           {% endif %}
 
           <li class="{{ active }}">
-            <a href="{{ site.baseurl }}/{{ group.title | downcase | replace: ' ', '-' }}/{{ doc.title | downcase | replace: ' ', '-' | replace:'-&-','-' }}">
+            <a href="{{ site.baseurl }}/{{ group_slug }}/{{ doc_slug }}/">
               {{ doc.title }}
             </a>
 
diff --git a/docs/_includes/nav-home.html b/docs/_includes/nav-home.html
index 0436e2dbe..3ba8520e0 100644
--- a/docs/_includes/nav-home.html
+++ b/docs/_includes/nav-home.html
@@ -1,7 +1,7 @@
-<header class="navbar navbar-light navbar-static-top bd-navbar">
-  <div class="container">
+<header class="navbar navbar-light navbar-toggleable-md bd-navbar">
+  <nav class="container">
     {% comment %}
-    <nav class="nav navbar-nav pull-xs-right">
+    <nav class="nav navbar-nav float-right">
       <div class="nav-item dropdown">
         <a class="nav-item nav-link dropdown-toggle" href="#" id="bd-versions" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
           v{{ site.current_version }}
@@ -25,37 +25,36 @@
     </nav>
     {% endcomment %}
 
-    <nav>
-      <div class="clearfix">
-        <button class="navbar-toggler pull-xs-right hidden-sm-up" type="button" data-toggle="collapse" data-target="#bd-main-nav" aria-controls="bd-main-nav" aria-expanded="false" aria-label="Toggle navigation">
-          &#9776;
-        </button>
-        <a class="navbar-brand hidden-sm-up" href="{{ site.baseurl }}/">
-          Bootstrap
-        </a>
-      </div>
-      <div class="collapse navbar-toggleable-xs" id="bd-main-nav">
-        <ul class="nav navbar-nav">
-          <li class="nav-item active">
-            <a class="nav-item nav-link {% if page.layout == "home" %}active{% endif %}" href="{{ site.baseurl }}/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Bootstrap');">Bootstrap</a>
-          </li>
-          <li class="nav-item">
-            <a class="nav-item nav-link {% if page.layout == "docs" %}active{% endif %}" href="{{ site.baseurl }}/getting-started/introduction/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Docs');">Documentation</a>
-          </li>
-          <li class="nav-item">
-            <a class="nav-item nav-link {% if page.title == "Examples" %}active{% endif %}" href="{{ site.baseurl }}/examples/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Examples');">Examples</a>
-          </li>
-          <li class="nav-item">
-            <a class="nav-item nav-link" href="{{ site.themes }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Themes');">Themes</a>
-          </li>
-          <li class="nav-item">
-            <a class="nav-item nav-link" href="{{ site.expo }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Expo');">Expo</a>
-          </li>
-          <li class="nav-item">
-            <a class="nav-item nav-link" href="{{ site.blog }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Blog');">Blog</a>
-          </li>
-        </ul>
-      </div>
-    </nav>
-  </div>
+    <div class="d-flex justify-content-between hidden-lg-up">
+      <a class="navbar-brand" href="{{ site.baseurl }}/">
+        Bootstrap
+      </a>
+      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#bd-main-nav" aria-controls="bd-main-nav" aria-expanded="false" aria-label="Toggle navigation">
+        <span class="navbar-toggler-icon"></span>
+      </button>
+    </div>
+
+    <div class="collapse navbar-collapse" id="bd-main-nav">
+      <ul class="nav navbar-nav">
+        <li class="nav-item active">
+          <a class="nav-item nav-link {% if page.layout == "home" %}active{% endif %}" href="{{ site.baseurl }}/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Bootstrap');">Bootstrap</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-item nav-link {% if page.layout == "docs" %}active{% endif %}" href="{{ site.baseurl }}/getting-started/introduction/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Docs');">Documentation</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-item nav-link {% if page.title == "Examples" %}active{% endif %}" href="{{ site.baseurl }}/examples/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Examples');">Examples</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-item nav-link" href="{{ site.themes }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Themes');">Themes</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-item nav-link" href="{{ site.expo }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Expo');">Expo</a>
+        </li>
+        <li class="nav-item">
+          <a class="nav-item nav-link" href="{{ site.blog }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Blog');">Blog</a>
+        </li>
+      </ul>
+    </div>
+  </nav>
 </header>
diff --git a/docs/_includes/page-headers.html b/docs/_includes/page-headers.html
index 26f5f95b1..50b59a982 100644
--- a/docs/_includes/page-headers.html
+++ b/docs/_includes/page-headers.html
@@ -18,6 +18,11 @@
   <p class="lead">
     Over a dozen reusable components built to provide buttons, dropdowns, input groups, navigation, alerts, and much more.
   </p>
+{% elsif page.group == "utilities" %}
+  <h1>Utilities</h1>
+  <p class="lead">
+    Bootstrap includes dozens of utilities—classes with a single purpose to reduce the frequency of highly repetitive declarations.
+  </p>
 {% elsif page.group == "javascript" %}
   <h1>JavaScript plugins</h1>
   <p class="lead">
diff --git a/docs/_includes/social.html b/docs/_includes/social.html
new file mode 100644
index 000000000..c488ea610
--- /dev/null
+++ b/docs/_includes/social.html
@@ -0,0 +1,31 @@
+<!-- Twitter -->
+<meta name="twitter:site" content="@{{ site.twitter }}">
+<meta name="twitter:creator" content="@{{ site.twitter }}">
+
+{% if page.title %}
+  <meta name="twitter:card" content="summary">
+  <meta name="twitter:title" content="{{ page.title }}">
+  <meta name="twitter:description" content="{{ page.description }}">
+  <meta name="twitter:image" content="{{ site.url }}{{ site.social_logo_path }}">
+{% else %}
+  <meta name="twitter:card" content="summary_large_image">
+  <meta name="twitter:title" content="{{ site.title }}">
+  <meta name="twitter:description" content="{{ site.description }}">
+  <meta name="twitter:image" content="{{ site.url }}{{ site.social_image_path }}">
+{% endif %}
+
+<!-- Facebook -->
+{% if page.title %}
+  <meta property="og:url" content="{{ site.url }}{{ page.url }}">
+  <meta property="og:title" content="{{ page.title }}">
+  <meta property="og:description" content="{{ page.description }}">
+{% else %}
+  <meta property="og:url" content="{{ site.url }}">
+  <meta property="og:title" content="{{ site.title }}">
+  <meta property="og:description" content="{{ site.description }}">
+{% endif %}
+<meta property="og:image" content="{{ site.url }}{{ site.social_image_path }}">
+
+<!-- Meta -->
+<meta name="description" content="{{ site.description }}">
+<meta name="author" content="{{ site.authors }}">