Updated post list preview to use excerpt instead of plaintext

ghost/admin/app/components/gh-posts-list-item.js

@@ -31,8 +31,8 @@ export default Component.extend({
         return authors.map(author => author.get('name') || author.get('email')).join(', ');
     }),
 
-    subText: computed('post.{plaintext,customExcerpt,metaDescription}', function () {
-        let text = this.get('post.plaintext') || '';
+    subText: computed('post.{excerpt,customExcerpt,metaDescription}', function () {
+        let text = this.get('post.excerpt') || '';
         let customExcerpt = this.get('post.customExcerpt');
         let metaDescription = this.get('post.metaDescription');
 

ghost/admin/app/models/post.js

@@ -76,6 +76,7 @@ export default Model.extend(Comparable, ValidationEngine, {
     validationType: 'post',
 
     createdAtUTC: attr('moment-utc'),
+    excerpt: attr('string'),
     customExcerpt: attr('string'),
     featured: attr('boolean', {defaultValue: false}),
     featureImage: attr('string'),

ghost/admin/app/serializers/post.js

@@ -34,10 +34,6 @@ export default ApplicationSerializer.extend(EmbeddedRecordsMixin, {
 
         // Properties that exist on the model but we don't want sent in the payload
         delete json.uuid;
-        // Server-side-generated fields
-        // TODO: remove once the API has protection against overriding auto generation
-        delete json.html;
-        delete json.plaintext;
         // Inserted locally as a convenience.
         delete json.author_id;
         // Read-only virtual property.

ghost/admin/mirage/factories/post.js

@@ -18,6 +18,7 @@ export default Factory.extend({
     ogDescription: null,
     ogImage: null,
     ogTitle: null,
+    excerpt(i) { return `Excerpt for post ${i}.`; },
     plaintext(i) { return `Plaintext for post ${i}.`; },
     publishedAt: '2015-12-19T16:25:07.000Z',
     publishedBy: 1,