Merge pull request #2 from nukeviet/develop

update
Merge pull request #3 from vuthao/develop

 make statement SQL compatible MySQL and Oracle
edit SQL limit
Merge remote-tracking branch 'quoctien/develop' into develop

Conflicts:
	modules/news/blocks/module.block_headline.php
edit SQL limit
module download: change table nv3_vi_download_comment
optimize code for PHP
optimize code
Merge pull request #69 from vuthao/develop

develop