Merge pull request #533 from e-piksel/master

Fixed if enable smtp mail, utf8 character errors in header.
Fix E_NOTICE showing when product keyword is not set
Merge pull request #535 from gtoniser/master

Fix E_NOTICE showing when product keyword isn't set
add setTitle for tag in search 

add setTitle for tag in search
Merge pull request #537 from fahmi182/master

add setTitle for tag in search
more modification work done
more modification work done. added xsd file to validate the xml modification schema
Add more security to config_encryption

Fix config_encryption to add unique key for each installation
Merge pull request #540 from msva/patch-2

Add more security to config_encryption
Fix for pagination translation in customer_online
Merge pull request #541 from msva/patch-3

Fix for pagination translation in customer_online
product page product id int force type added.
Merge branch 'master' of https://github.com/opencart/opencart
more modification work done. also added icon pack for the new admin design
store locations no results colspan's num should be 6
Merge pull request #542 from eorza/master

Store location no results colspan should be 6
modification work
Image manager upload is not working with Opera
Update review.php

After edit we need to update 'date_modified', not 'date_add'
Merge pull request #547 from YuriGural/patch-1

Update review.php