Work the /id/ endpoint

- Forward the size to the template
- Rework how the response field is populated
- Provide the message as string to the raw template
- Lists all sizes in a single place
Display the message in size extra-large
When linking to the id page, we have the space so go for the largest size
Update docs for extra-large size.
Typofix.
Colorized the json here.
Add extra-large to the message_card util.
Merge pull request #127 from fedora-infra/feature/msg_in_card

Feature/msg in card