FIX: Category Logo preview should not repeat

app/assets/javascripts/discourse/components/image-uploader.js.es6

@@ -1,13 +1,14 @@
+import property from 'ember-addons/ember-computed-decorators';
 import UploadMixin from "discourse/mixins/upload";
 
 export default Em.Component.extend(UploadMixin, {
   classNames: ["image-uploader"],
 
-  backgroundStyle: function() {
-    const imageUrl = this.get("imageUrl");
+  @property('imageUrl')
+  backgroundStyle(imageUrl) {
     if (Em.isNone(imageUrl)) { return; }
-    return ("background-image: url(" + imageUrl + ")").htmlSafe();
-  }.property("imageUrl"),
+    return `background-image: url(${imageUrl})`.htmlSafe();
+  },
 
   uploadDone(upload) {
     this.set("imageUrl", upload.url);

app/assets/javascripts/discourse/templates/components/edit-category-images.hbs

@@ -1,6 +1,6 @@
 <section class='field'>
   <label>{{i18n 'category.logo'}}</label>
-  {{image-uploader imageUrl=category.logo_url type="category_logo"}}
+  {{image-uploader imageUrl=category.logo_url type="category_logo" class="no-repeat"}}
 </section>
 
 <section class='field'>

app/assets/stylesheets/common/base/upload.scss

@@ -2,3 +2,9 @@
   background-size: cover;
   background: $primary center center;
 }
+
+.image-uploader.no-repeat {
+  .uploaded-image-preview {
+    background-repeat: no-repeat;
+  }
+}