allowing navigator (and other apps) to specify themselves as the origin for a cart.
new test for 'origin' cart property.
have created partials for Navigator (unchaged) and added helper method
fixing merge
removing commented-out code
navigator template now working (but ugly)
extending to other mail templates
Merge new changes from branch '78029724_handle_approver_emails' into 78464884_navigator_email_template
Removed unnecessary attribute in spec
Merge branch '78029724_handle_approver_emails' into 78464884_navigator_email_template
Merge pull request #53 from 18F/78464884_navigator_email_template

78464884 navigator email template