Include widgets.js on blog posts that need it

Fixes #78

config/default/core.entity_view_display.node.post.default.yml

@@ -5,6 +5,7 @@ dependencies:
   config:
     - field.field.node.post.body
     - field.field.node.post.field_excerpt
+    - field.field.node.post.field_has_tweet
     - field.field.node.post.field_images
     - field.field.node.post.field_series
     - field.field.node.post.field_tags
@@ -24,6 +25,16 @@ content:
     settings: {  }
     third_party_settings: {  }
     region: content
+  field_has_tweet:
+    weight: 3
+    label: above
+    settings:
+      format: default
+      format_custom_false: ''
+      format_custom_true: ''
+    third_party_settings: {  }
+    type: boolean
+    region: content
   field_tags:
     weight: 2
     label: above