[B] Fix error when creating/looking a data request

[leojpod]

This fix an issue with the is-url helper. When creating a data-request, there is no externalId defined hence the is-url helper caused the page to break.

To test:

• [ ] checkout master, login/create an account

• [ ] Click "request data" in the header.

• [ ] Fill up and form and submit: the page should crash after submission

• [ ] checkout this branch

• [ ] repeat the process,

• [ ] nothing should break and see that you're landing on the freshly created request.

[leojpod]

cheers