Routing frontend URLs returns JSON API response

[jay-hankins]

Bug description
JSON api response data is displayed in the browser. The frontend does not intercept the routes. We need to prefix the API on some level.

Expected behavior
I expect visiting /ideas/<idea id> will load the specific idea in the frontend.

Steps to reproduce the issue:

1. Visit OpenIdeas, and open any idea from the ideas feed.
2. Refresh the page.
3. See the JSON output.

Technical details:

• Platform (windows/mac/linux/docker): Mac
• Browser: Safari

Additional context
The API should be prefixed. There's a couple approaches, but I'm not knowledgable enough to say which is the best.

[jay-hankins]

@matthewess, you're a good resource for the backend code. can you check this out?