Merge pull request #4641 from nonamethanks/weibo_previews

Weibo: use proxy for upload previews

app/logical/sources/strategies/weibo.rb

@@ -90,6 +90,10 @@ module Sources
         image_urls.map { |img| img.gsub(%r{.cn/\w+/(\w+)}, '.cn/orj360/\1') }
       end
 
+      def headers
+        { "Referer" => "https://weibo.com" }
+      end
+
       def page_url
         if api_response.present?
           artist_id = api_response["user"]["id"]