New pt-BR translation
Added Breno Uchoa to AUTHORS
Merge
Revert cart to old values if update is not valid
Show invalid quantity in stock error in cart update, in prep for pr that resets cart form values.
Mark up cart errors for correct styling.
Merge
Maintain errors when creating new cart formset when cart update invalid.
Fix non-ascii chars in product option names. Closes #112.
Increase cart item url size to allow for potentially long unicode slugs. Closes #113.
Fix handling of 'same shipping details' checkbox.
Pep8 fixes and remove redundant dict copy.
Remove redundant import.
Fix UnicodeEncodeError in ProductVariation.__unicode__

field.verbose_name.decode(utf-8) raises UnicodeError if verbose_name can
not be encoded by ASCII. Add encode(utf-8) to fix it.
PEP8 fix
Allow large product image overlays to scroll. Closes #117.
Increase description field lengths on SelectedProduct models.
Cover both str and unicode-like field.verbose_name cases

Treat unicode-like object as standard and use a u"" to do formatting. In cases
where it is actually a str, decode it to unicode first.
Use unicode in final formatting to keep consistancy
Merge