anchor.diff:      delete $rootScope.loading_single_feed[feed_id]
       add_feed response
       favicoSvc.update_unread_badge()
  +
  +  #--------------------------------------------
  +  # PRIVATE FUNCTION: Operations after loading a single feed finishes with an error
  +  #--------------------------------------------
  +  feed_loading_error = (params, status)->
  +    id = params.feed_id
  +    delete $rootScope.loading_single_feed[id]
  +    if status == 404
  +      cleanupSvc.remove_feed id
  +    else
  +      timerFlagSvc.start 'error_loading_feeds'
   
     #--------------------------------------------
     # PRIVATE FUNCTION: Operations after a page of feeds has been loaded
  
positive.code:       load_feeds page
  
    #--------------------------------------------
    # PRIVATE FUNCTION: Operations after feeds in a folder have been loaded
    #--------------------------------------------
    folder_feeds_loaded = (params, response)->
  
negative.code:     # Update unread counts with the received feeds. Set the unread counter for any feed in the folder but
      # not in the received JSON to zero.
      update_folder_feeds folder, response.slice()
  
    #--------------------------------------------
    # PRIVATE FUNCTION: Operations after loading feeds in a folder finishes with an error
    #--------------------------------------------
    folder_feeds_loading_error = (params, status)->
      id = params.folder_id
      delete $rootScope.loading_single_folder_feeds[id]
      if status == 404
        # If the server returns a 404, there are no feeds to return; set unread count to zero for all feeds in the folder.
        folder = findSvc.find_folder id
        update_folder_feeds folder, null
      else
        timerFlagSvc.start 'error_loading_folders'
  
    #--------------------------------------------
    # PRIVATE FUNCTION: Load feeds. Depending on the value of the flag "show_read" it
  