changelog:
Fixed can not login to ACP via firefox
Fixed can not delete posts via firefox
Fixed language constant string missing (LOG_CONFIG_MOBIQUO and acl_acp_moiquo) .
Fixed push time out error
Added push conditions checking in push.php
Fixed SQL error when post with emoji
Fixed repeating the first page of unread posts in the second page
Fixed Syntax Error in SQL Statement on Login phpBB on PostgreSQL
Fixed undefined error when edit a PM
