Added support for hidden title and feature image on pages (#943)

* Added support for hidden title and feature image on pages

Refs https://github.com/TryGhost/Product/issues/3568

* Switched from match to if helper for show_title_and_feature_image

Refs https://github.com/TryGhost/Product/issues/3568

Author: sanne-san

page.hbs

@@ -10,30 +10,32 @@ into the {body} tag of the default.hbs template --}}
 <main id="site-main" class="site-main">
 <article class="article {{post_class}}">
 
-    <header class="article-header gh-canvas">
-
-        <h1 class="article-title">{{title}}</h1>
-
-        {{#if feature_image}}
-            <figure class="article-image">
-                {{!-- This is a responsive image, it loads different sizes depending on device
-                https://medium.freecodecamp.org/a-guide-to-responsive-images-with-ready-to-use-templates-c400bd65c433 --}}
-                <img
-                    srcset="{{img_url feature_image size="s"}} 300w,
-                            {{img_url feature_image size="m"}} 600w,
-                            {{img_url feature_image size="l"}} 1000w,
-                            {{img_url feature_image size="xl"}} 2000w"
-                    sizes="(min-width: 1400px) 1400px, 92vw"
-                    src="{{img_url feature_image size="xl"}}"
-                    alt="{{#if feature_image_alt}}{{feature_image_alt}}{{else}}{{title}}{{/if}}"
-                />
-                {{#if feature_image_caption}}
-                    <figcaption>{{feature_image_caption}}</figcaption>
-                {{/if}}
-            </figure>
-        {{/if}}
-
-    </header>
+    {{#if show_title_and_feature_image}}
+        <header class="article-header gh-canvas">
+
+            <h1 class="article-title">{{title}}</h1>
+
+            {{#if feature_image}}
+                <figure class="article-image">
+                    {{!-- This is a responsive image, it loads different sizes depending on device
+                    https://medium.freecodecamp.org/a-guide-to-responsive-images-with-ready-to-use-templates-c400bd65c433 --}}
+                    <img
+                        srcset="{{img_url feature_image size="s"}} 300w,
+                                {{img_url feature_image size="m"}} 600w,
+                                {{img_url feature_image size="l"}} 1000w,
+                                {{img_url feature_image size="xl"}} 2000w"
+                        sizes="(min-width: 1400px) 1400px, 92vw"
+                        src="{{img_url feature_image size="xl"}}"
+                        alt="{{#if feature_image_alt}}{{feature_image_alt}}{{else}}{{title}}{{/if}}"
+                    />
+                    {{#if feature_image_caption}}
+                        <figcaption>{{feature_image_caption}}</figcaption>
+                    {{/if}}
+                </figure>
+            {{/if}}
+
+        </header>
+    {{/if}}
 
     <section class="gh-content gh-canvas">
         {{content}}