fix error

app/helpers/announcements_helper.rb

@@ -33,7 +33,7 @@ module AnnouncementsHelper
     author = User.find(a.create_user_id).member_profile.name rescue ""
     desc = a.image_description
     desc = (desc.nil? || desc == "" ? "announcement image" : desc)
-    link_to_show = !a.is_external_link.to_s.empty? ? a.external_link : OrbitHelper.widget_item_url(a.to_param)
+    link_to_show = a.is_external_link? ? a.external_link : OrbitHelper.widget_item_url(a.to_param)
     target = a.is_external_link ? "_blank" : "_self"
     if @image_version == 'thumb'
       image_url = a.image.thumb.url