Based on response from '/api/v1/deployment_env', we should display some information if the currently viewed instance is the testing one.

The response from that endpoint is:

{"deployment_env":"prod"}
# or
{"deployment_env":"stg"}

We shouldn't display any warning on production, but when it's staging, something like this might make sense:

• Display warning box (yellow background, not hide-able) with something like: "This is a testing version of Fedora Packager Dashboard. You might want to use the production instance(hyperlink to the production)."
• Change the logo in the top left corner somehow (make the icon yellow instead of fedora blue?)