Merge pull request #1323 from eka7a/master

Fixed customer_reward table name and more
Fix to syntax.

Ref: #1323
Updated payment/pp_express.php when searching for zone info to check the code and the name columns.
Added fix for PayPal express to allow for download only items and PayPal guess checkout. Guest checkout with no shipping option will not return any address data for the checkout so exceptions for no payment address data have been handled.
Added check for logging enabled in pp_express.php controller before anything is written to the log.
more custom field work done
Merge branch 'master' of https://github.com/opencart/opencart
changed the system to use vqmod

https://github.com/mhcwebdesign/opencart-oe/blob/master/upload/system/engine/modification.php
more vqmod work done
more vqmod stuff done
Double "a" tag color in css file
updated the vqmod code but i'm probably going to undo the vqmod changes and use the system i had before. vqmod seems to have to many features that are just not required.
vqmod removed, using my own again
Added If used information page by return terms, show warning message.
Merge branch 'master' of git@github.com:opencart/opencart.git