Reduce liquid's whitespace for a few pages.

Also fix a couple of typos while at it and change header tags' order.

_includes/callout-danger-async-methods.md

@@ -1,7 +1,7 @@
 {% callout danger %}
 #### Asynchronous methods and transitions
 
-All API methods are **asynchronous** and start a **transition**. They returns to the caller as soon as the transition is started but **before it ends**. In addition, a method call on a **transitioning component will be ignored**.
+All API methods are **asynchronous** and start a **transition**. They return to the caller as soon as the transition is started but **before it ends**. In addition, a method call on a **transitioning component will be ignored**.
 
 [See our JavaScript documentation for more information.]({{ site.baseurl }}/docs/{{ site.docs_version }}/getting-started/javascript/)
 {% endcallout %}

_includes/docs-sidebar.html

@@ -1,37 +1,37 @@
 <form class="bd-search d-flex align-items-center">
   <input type="search" class="form-control" id="search-input" placeholder="Search..." aria-label="Search for..." autocomplete="off">
-  <button class="btn-link bd-search-docs-toggle d-md-none p-0 ml-3" type="button" data-toggle="collapse" data-target="#bd-docs-nav" aria-controls="bd-docs-nav" aria-expanded="false" aria-label="Toggle docs avigation">
+  <button class="btn-link bd-search-docs-toggle d-md-none p-0 ml-3" type="button" data-toggle="collapse" data-target="#bd-docs-nav" aria-controls="bd-docs-nav" aria-expanded="false" aria-label="Toggle docs navigation">
     {% include icons/menu.svg class="" width="30" height="30" %}
   </button>
 </form>
 
 <nav class="collapse bd-links" id="bd-docs-nav">
-  {% assign page_slug = page.url | split: '/' | last %}
-  {% for group in site.data.nav %}
-  {% assign link = group.pages | first %}
-  {% assign link_slug = link.title | slugify %}
-  {% assign group_slug = group.title | slugify %}
-  {% assign active = nil %}
+  {%- assign page_slug = page.url | split: '/' | last -%}
+  {%- for group in site.data.nav -%}
+  {%- assign link = group.pages | first -%}
+  {%- assign link_slug = link.title | slugify -%}
+  {%- assign group_slug = group.title | slugify -%}
+  {%- assign active = nil -%}
 
-  {% if page.group == group_slug %}
-    {% assign active = 'active' %}
-  {% endif %}
+  {%- if page.group == group_slug -%}
+    {%- assign active = 'active' -%}
+  {%- endif -%}
 
-  <div class="bd-toc-item {{ active }}">
+  <div class="bd-toc-item{% unless active == nil %} {{ active }}{% endunless %}">
       <a class="bd-toc-link" href="{{ site.baseurl }}/docs/{{ site.docs_version }}/{{ group_slug }}/{{ link_slug }}{% if link_slug %}/{% endif %}">
         {{ group.title }}
       </a>
 
       <ul class="nav bd-sidenav">
-        {% for doc in group.pages %}
-          {% assign doc_slug = doc.title | slugify %}
-          {% assign active = nil %}
+        {%- for doc in group.pages -%}
+          {%- assign doc_slug = doc.title | slugify -%}
+          {%- assign active = nil -%}
 
-          {% if page.group == group_slug and page_slug == doc_slug %}
-            {% assign active = 'active bd-sidenav-active' %}
-          {% endif %}
+          {%- if page.group == group_slug and page_slug == doc_slug -%}
+            {%- assign active = 'active bd-sidenav-active' -%}
+          {%- endif -%}
 
-          <li class="{{ active }}">
+          <li{% unless active == nil %} class="{{ active }}"{% endunless %}>
             <a href="{{ site.baseurl }}/docs/{{ site.docs_version }}/{{ group_slug }}/{{ doc_slug }}/">
               {{ doc.title }}
             </a>
@@ -50,8 +50,8 @@
             {% endunless %}
             {% endcomment %}
           </li>
-        {% endfor %}
+        {%- endfor -%}
       </ul>
     </div>
-  {% endfor %}
+  {%- endfor -%}
 </nav>

_includes/header.html

@@ -3,15 +3,13 @@
 <meta name="generator" content="Jekyll v{{ jekyll.version }}">
 
 <title>
-  {% if page.title %}
+  {%- if page.title -%}
     {{ page.title }} &middot; {{ site.title }}
-  {% else %}
+  {%- else -%}
     {{ site.title }} &middot; {{ site.description }}
-  {% endif %}
+  {%- endif -%}
 </title>
 
-{% include social.html %}
-
 <!-- Bootstrap core CSS -->
 {% if site.github %}
   <link href="{{ site.baseurl }}/dist/css/bootstrap.min.css" rel="stylesheet">
@@ -25,6 +23,8 @@
 {% endif %}
 <link href="{{ site.baseurl }}/assets/css/docs.min.css" rel="stylesheet">
 
+{% include social.html %}
+
 <script>
   (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),

_includes/scripts.html

@@ -51,5 +51,5 @@ Holder.addTheme('gray', {
   fg: 'rgba(255,255,255,.75)',
   font: 'Helvetica',
   fontweight: 'normal'
-})
+});
 </script>

_includes/social.html

@@ -1,3 +1,7 @@
+<!-- Meta -->
+<meta name="description" content="{{ site.description }}">
+<meta name="author" content="{{ site.authors }}">
+
 <!-- Twitter -->
 <meta name="twitter:site" content="@{{ site.twitter }}">
 <meta name="twitter:creator" content="@{{ site.twitter }}">
@@ -30,7 +34,3 @@
 <meta property="og:image:type" content="image/png">
 <meta property="og:image:width" content="1200">
 <meta property="og:image:height" content="630">
-
-<!-- Meta -->
-<meta name="description" content="{{ site.description }}">
-<meta name="author" content="{{ site.authors }}">