_s: Add featured images to Post and Pages with the ability to hide them via Content Options.

_s: Fix Travis CI error

_s: Add missing coma in array

template-parts/content-page.php

@@ -14,6 +14,8 @@
 		<?php the_title( '<h1 class="entry-title">', '</h1>' ); ?>
 	</header><!-- .entry-header -->
 
+	<?php _s_post_thumbnail(); ?>
+
 	<div class="entry-content">
 		<?php
 			the_content();