Refactor About and FAQ pages for better information.

Replace Data page with a link to datasets.deepcell.org.
Only show top-level error if NODE_ENV is set to production.
Fix mobile menu rendering.
Remove redundant information from FAQ page (lots of info is also on About).
Update FAQ to remove references to the DeepCell Kiosk and instead route users to intro-to-deepcell.
Add new Swagger component to fix routing 404 issues.

Fixes #155, Fixes #161

vanvalenlab / kiosk-frontend