Fixed form field selector for adding history comment.
Fixed missing order list issue when status id is 0
Load missing model class.
Merge pull request #1684 from eka7a/master

Pagination with rel="next" and re="prev" on Catalog
Added message on FE when adding a product to the wish list that already exists in it.
Merge branch 'master' of https://github.com/opencart/opencart
Added validation check for cart qty add - make sure it is not a float.
Changed cart add validation of quantity, is_float will not work.

Qty is checked for < 1 now, any other decimal like 2.2 will be cast to an int during the cart add method in library/cart.php