UX: improve handling of users in queued-posts

- Display an icon on already blocked users
- Automatically unblock users that you approve

app/assets/javascripts/discourse/templates/queued-posts.hbs

@@ -6,7 +6,6 @@
           {{#user-link user=ctrl.post.user}}
             {{avatar ctrl.post.user imageSize="large"}}
           {{/user-link}}
-
         </div>
         <div class='cooked'>
           <div class='names'>
@@ -14,6 +13,9 @@
               {{#user-link user=ctrl.post.user}}
                 {{ctrl.post.user.username}}
               {{/user-link}}
+              {{#if ctrl.post.user.blocked}}
+              <i class='fa fa-ban' title='{{i18n "user.blocked_tooltip"}}'></i>
+              {{/if}}
             </span>
           </div>
           <div class='post-info'>

app/models/queued_post.rb

@@ -66,6 +66,10 @@ class QueuedPost < ActiveRecord::Base
 
       creator = PostCreator.new(user, create_options.merge(skip_validations: true))
       created_post = creator.create
+
+      if user.blocked?
+        user.update_columns(blocked: false)
+      end
     end
 
     DiscourseEvent.trigger(:approved_post, self)

app/serializers/queued_post_serializer.rb

@@ -13,7 +13,7 @@ class QueuedPostSerializer < ApplicationSerializer
              :category_id,
              :can_delete_user
 
-  has_one :user, serializer: BasicUserSerializer
+  has_one :user, serializer: AdminUserListSerializer
   has_one :topic, serializer: BasicTopicSerializer
 
   def category_id