Store setting placeholder image
Merge branch 'master' of git@github.com:opencart/opencart.git
Fixed load model URL Alias
https://github.com/opencart/opencart/issues/1948
https://github.com/opencart/opencart/issues/1947
https://github.com/opencart/opencart/issues/1942
https://github.com/opencart/opencart/issues/1942
Merge pull request #1945 from eka7a/master

Fixed load model URL Alias
Update referral code for authorizenet.
Updated changelog.md
Merged master fixed conflict.