Locale specific paypal urls

[mreinsch]

The subject says it all, you can now use something like

redirect_to pay_response.approve_paypal_payment_url(:locale => I18n.locale)

to give Paypal a hint which locale it should use (got this tip from Paypal technical support).

Also improved the tests to actually test the generated URLs and simplified the code there.

[mreinsch]

after some more tests: this actually has to be the user's country code to work correctly. So I updated the commit.

[mreinsch]

rebased on top of current master and another minor change. Using the locale specific URLs in production now and they are working fine.

[tc]

sorry for missing this one long ago. Can you rebase it on master? Also, is it possible you change test to not depend on activesupport?

[mreinsch]

I didn't pull in the active support requirement, just added it to the gemspec because of the "require 'active_support/core_ext/string'" in the test_helper.rb: https://github.com/tc/paypal_adaptive/blob/master/test/test_helper.rb

[tc]

ah got it

[mreinsch]

rebased and fixed a test in addition

[mreinsch]

thanks!