Integrated post distribution dropdown into publish menu

refs https://github.com/TryGhost/Team/issues/947

- Shows the publish option selector based on the "emailOnlyPosts" feature status

ghost/admin/app/components/gh-publishmenu-draft.hbs

@@ -1,5 +1,14 @@
 <div {{did-insert (fn this.setSaveType "publish")}} ...attributes>
-    <header class="gh-publishmenu-heading">Ready to {{this.nextActionName}} this {{@post.displayName}}?</header>
+    <header class="gh-publishmenu-heading">Ready to
+        {{#if this.showEmailOnlyInput}}
+            <GhDistributionActionSelect
+                @post={{@post}}
+            />
+        {{else}}
+            {{this.nextActionName}}
+        {{/if}}
+        this {{@post.displayName}}?
+    </header>
     <section class="gh-publishmenu-content">
         <div class="gh-publishmenu-section">
             <div class="gh-publishmenu-radio {{if (eq @saveType "publish") "active"}}" {{on "click" (fn this.setSaveType "publish")}}>
@@ -30,7 +39,7 @@
             </div>
         </div>
 
-        {{#if @canSendEmail}}
+        {{#if this.showEmailSection}}
             <div class="gh-publishmenu-section" {{did-insert (perform this.countTotalMembersTask)}}>
                 <div class="gh-publishmenu-email">
                     {{#if @isSendingEmailLimited}}

ghost/admin/app/components/gh-publishmenu-draft.js

@@ -28,6 +28,14 @@ export default class GhPublishMenuDraftComponent extends Component {
         return this.args.post.get('emailOnly') ? 'send' : 'publish';
     }
 
+    get showEmailSection() {
+        return this.args.canSendEmail && this.args.post.get('emailRecipientFilter') !== 'none';
+    }
+
+    get showEmailOnlyInput() {
+        return this.feature.get('emailOnlyPosts') && this.args.post.get('isPost');
+    }
+
     constructor() {
         super(...arguments);
         this.args.post.set('publishedAtBlogTZ', this.args.post.publishedAtUTC);