Merge pull request #87 from PhamQuocTien132/develop

develop
format code
fix call preg_replace_callback in php 5.2
block site if agent empty
change admin link
fix HTTP_USER_AGENT
optimize code for oracle database
edit groups users
optimize code
fix block menu for module shops
fix add admin
fix search module page
fix drag_block
fix search users
fix Jquery Toggle in jquery 1.10
delete duplicate language
optimize cronjobs: reduce amount cronjobs into trang web
module News: fix jquery.autocomplete.css
module News: optimize code html, fix error pdo
module News: fix error pdo