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.
Merge branch 'master' of https://github.com/opencart/opencart
removed tests.
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
Trailing whitespace removed in /admin php files

More code cleanup @jamesallsup
Merge pull request #1409 from opencarthelp/master

Trailing whitespace removed in /admin php files
Fixing notices.
Ported changes from 1.5.6.x branch.
Merge pull request #1410 from Martynas-P/master

Ported PP Express' changes from 1.5.6 to 2.0