Update subtitle to subheadline

_layouts/page-fullwidth.html

@@ -15,7 +15,7 @@ layout: default
 
 		<article>
 			<header>
-				{% if page.subtitle %}<p class="subtitle">{{ page.subtitle }}</p>{% endif %}
+				{% if page.subheadline %}<p class="subheadline">{{ page.subheadline }}</p>{% endif %}
 				<h1>{{ page.title }}</h1>
 			</header>
 

_layouts/page.html

@@ -14,7 +14,7 @@ layout: default
 
 		<article>
 			<header>
-				{% if page.subtitle %}<p class="subtitle">{{ page.subtitle }}</p>{% endif %}
+				{% if page.subheadline %}<p class="subheadline">{{ page.subheadline }}</p>{% endif %}
 				<h1>{{ page.title }}</h1>
 			</header>
 

_layouts/post-left-sidebar.html

@@ -10,7 +10,7 @@ layout: default
 	<div class="medium-8 columns">
 		<article>
 			<header>
-				{% if page.subtitle %}<p class="subtitle">{{ page.subtitle }}</p>{% endif %}
+				{% if page.subheadline %}<p class="subheadline">{{ page.subheadline }}</p>{% endif %}
 				{% if page.image.title %}<img src="{{ site.url }}/assets/img/{{ page.image.title }}" width="970" alt="{{ page.title escape_once }}">{% endif %}
 				<h1>{{ page.title }}</h1>
 			</header>

_layouts/post-right-sidebar.html

@@ -5,7 +5,7 @@ layout: default
 	<div class="medium-8 columns">
 		<article>
 			<header>
-				{% if page.subtitle %}<p class="subtitle">{{ page.subtitle }}</p>{% endif %}
+				{% if page.subheadline %}<p class="subheadline">{{ page.subheadline }}</p>{% endif %}
 				{% if page.image.title %}<img src="{{ site.url }}/assets/img/{{ page.image.title }}" width="970" alt="{{ page.title escape_once }}">{% endif %}
 				<h1>{{ page.title }}</h1>
 			</header>

_layouts/post.html

@@ -14,7 +14,7 @@ layout: default
 
 		<article>
 			<header>
-				{% if page.subtitle %}<p class="subtitle">{{ page.subtitle }}</p>{% endif %}
+				{% if page.subheadline %}<p class="subheadline">{{ page.subheadline }}</p>{% endif %}
 				<h1>{{ page.title }}</h1>
 			</header>