FEATURE: Add category to Group Post Listing

app/assets/javascripts/discourse/templates/group/index.hbs

@@ -7,6 +7,7 @@
         <span class="title">
           <a href="{{unbound url}}">{{unbound title}}</a>
         </span>
+        <span class="category">{{category-link category}}</span>
         {{#if byName}}
           <span class="name">
             {{unbound byName}}

app/assets/stylesheets/desktop/user.scss

@@ -452,12 +452,13 @@
       text-overflow: ellipsis;
     }
     .name {
-      display: block;
+      display: inline-block;
       font-size: 14px;
       max-width: 400px;
       white-space: nowrap;
       overflow: hidden;
       text-overflow: ellipsis;
+      vertical-align: middle;
     }
     .edit-reason {
       background-color: scale-color($highlight, $lightness: 25%);

app/assets/stylesheets/mobile/user.scss

@@ -459,12 +459,13 @@
       text-overflow: ellipsis;
     }
     .name {
-      display: block;
+      display: inline-block;
       font-size: 14px;
       max-width: 400px;
       white-space: nowrap;
       overflow: hidden;
       text-overflow: ellipsis;
+      vertical-align: middle;
     }
     .edit-reason {
       background-color: scale-color($highlight, $lightness: 25%);

app/serializers/group_post_serializer.rb

@@ -5,7 +5,8 @@ class GroupPostSerializer < ApplicationSerializer
              :title,
              :url,
              :user_title,
-             :user_long_name
+             :user_long_name,
+             :category
 
   has_one :user, serializer: BasicUserSerializer, embed: :objects
 
@@ -24,5 +25,9 @@ class GroupPostSerializer < ApplicationSerializer
   def include_user_long_name?
     SiteSetting.enable_names?
   end
+
+  def category
+    object.topic.category
+  end
 end