Display claimed Triplers' registration status on /tripler page

[shauminn-colab]

As an ambassador I want to know if a Tripler I have claimed is registered or unregistered to vote.

Depends upon backend ticket: colab-coop/HelloVoter#45**

• Backend will provide registration status per Tripler, pending above reference ticket
• An indicator of registration status should be added on frontend on each claimed Tripler's row:

- There is no mockup for this registered/unregistered indicator. Add "Registered" or "Unregistered" text under each Tripler's address on all 5 tables on /triplers, then vertically re-center content within the row