add forum_today_posts to Forum
add thread_first_post to Thread
forum index var change to forum_list
ForumIndexView model change to thread, forum_list use get_context_data to get
modify forum view queryset, get all the child forum's threads
add url  forumlist/ display all forums
add get_display_page_range to display more pretty paginator bar
add searchform
add tagging app, ForumSearchView ForumTagsView
add hilight filter, hilight some text
dont display posts in admin
modify default value of models