Bump rails to 3.2.12
Travis test with Ruby 2.0
Convert db seed + sample files to Ruby

This removes some confusion about what countries are in what zone members, and will prevent us from running into issues like #2547
changed products_path to spree.products_path

Fixes #2559
changed root_path to spree.root_path to allow template to be recalled

Fixes #2559
added specs to show how to add address to Order through API and improved addresses retorn with error

Fixes #2546
Fixes #2549
to address in mail_interceptor is always an array. Remove brackets.
Convert db seed + sample files to Ruby

This removes some confusion about what countries are in what zone members, and will prevent us from running into issues like #2547
creating order through API as guest #2545
returning correct error message if cannot transition from cart to address
[Fixes #2551] [api] Specs to ensure a user or email can be assigned to an order
Revert "Remove call to authorize! which is actually not doing anything"

Need to call authorize with :admin to prevent index on Product which is
allowed in the ability here:

https://github.com/spree/spree/blob/master/core/app/models/spree/ability.rb#L57

NOTE: The ability intends the permission for the front_end but it
applies to the back end also.

This reverts commit a1d2e6f018858ad8d7a7b5cdd7f77307962feff3.

Conflicts:
	core/app/controllers/spree/admin/base_controller.rb
	core/lib/spree/core/testing_support/authorization_helpers.rb
Merge branch '1-3-stable' of git://github.com/spree/spree into 1-3-stable