removed tests.
Updated request.php library to allow for "cleaned" values and also maintain the raw global.

REF: #1402
Merge branch 'master' of https://github.com/opencart/opencart
Trailing whitespace removed in /catalog php files
Merge pull request #1407 from opencarthelp/master

Trailing whitespace removed in /catalog php files

Merged with pleasure!!
Ported PayPal's and Amazon Payments' buttons to 2.0
Merge branch 'master' of https://github.com/opencart/opencart