Add jquery.validte plugin, add signup form validation
Add email and user format validate
fix categoried_topics_path error
Add Topic/Comment validate
Add empty message
Remove top paginate; change tabs style
Fix topic tab error
Fix comments counter cache and topic hot update
Fix topic trash action
Fix topics counter cache
Topic last page link
Add admin category validate
Add admin user client validations
Add client validation for admin page
Use client vidatation for topic/comments