Fix annc iframe bug

app/controllers/announcements_controller.rb

@@ -330,12 +330,12 @@ class AnnouncementsController < ApplicationController
     @type = "show_widget"
     @show_page = params[:show_page]
     if params[:tags].nil?
-      @tags = ModuleApp.where(:key => "announcement").first.tags.map{|t| t.id.to_s}  
+      @tags = ['all']
     else
       @tags = params[:tags]
     end
     if params[:categories].nil?
-      @categories = ModuleApp.where(:key => "announcement").first.categories.map{|c| c.id.to_s}
+      @categories = ['all']
     else
       @categories = params[:categories]
     end