expose tx created and buyer fields, use pk as uri attr since prepend_urls doesn't apply to ToOneFields
Merge pull request #59 from ngokevin/master

expose tx created and buyer fields, use pk as uri attribute instead of uuid
Revert "expose tx created and buyer fields, use pk as uri attr since prepend_urls doesn't apply to ToOneFields"

This reverts commit 9cb5d17a2d88b9045d286171abb2e3c3947dcb7a.
expose tx created and buyer fields, use pk as uri attr since prepend_urls doesn't apply to ToOneFields
dorefund (bug 821906)