Merge pull request #355 from hongoctrien/develop

Update config theme default
Update extensions.class.php
Merge pull request #356 from hongoctrien/develop

Fix change status department
fixed block installed when installing new theme
module users: fix add user in groups
format code
module comment: fix Undefined variable view_comm
update config rewite
Merge pull request #65 from nukeviet/develop

Update code from nukeviet (25/05/2014)