Fix saved searces, news updates, ip bans being dumped to BigQuery.

Prevent saved searches, news updates, and ip bans from being publicly
dumped to BigQuery. They didn't override the `visible` method to
restrict their visibility for anonymous users.

app/controllers/forum_topic_visits_controller.rb

@@ -2,7 +2,7 @@ class ForumTopicVisitsController < ApplicationController
   respond_to :xml, :json
 
   def index
-    @forum_topic_visits = ForumTopicVisit.where(user: CurrentUser.user).paginated_search(params)
+    @forum_topic_visits = ForumTopicVisit.visible(CurrentUser.user).paginated_search(params)
     respond_with(@forum_topic_visits)
   end
 end

app/controllers/news_updates_controller.rb

@@ -1,9 +1,9 @@
 class NewsUpdatesController < ApplicationController
-  respond_to :html
+  respond_to :html, :json, :xml
 
   def index
     authorize NewsUpdate
-    @news_updates = NewsUpdate.order("id desc").paginate(params[:page], :limit => params[:limit])
+    @news_updates = NewsUpdate.visible(CurrentUser.user).paginated_search(params, count_pages: true)
     respond_with(@news_updates)
   end
 

app/controllers/saved_searches_controller.rb

@@ -2,7 +2,7 @@ class SavedSearchesController < ApplicationController
   respond_to :html, :xml, :json, :js
 
   def index
-    @saved_searches = authorize SavedSearch.where(user: CurrentUser.user).paginated_search(params, count_pages: true)
+    @saved_searches = authorize SavedSearch.visible(CurrentUser.user).paginated_search(params, count_pages: true)
     respond_with(@saved_searches)
   end