Added tests for Category, Information, Manufacturer and Product models in catalog.
Added test for checkout/cart/add method, added output getter to Response class.
fix to Url test.
Changed spaces to tabs.
Added test for reviews.
moved tests folder outside upload folder.
missing files.
Deleted SQL file in the tests folder.
a few fixes
Merge branch 'master' of https://github.com/opencart/opencart
Changed standards on build server.

Added weights to code sniffer finds.

Added more checks.

Updated more files to ensure tabs not spaces are used.
Merge branch 'master' of https://github.com/opencart/opencart
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
Merge pull request #1408 from Martynas-P/master

Update PayPal's and Amazon Payments' buttons