Embed a SolveBio variant-detail dashboard

Bundles in the SolveBio JS library which loads the dashboard iframe from an external cookie-less domain (AWS S3).
Remove SolveBio requests from variant resource.
Using the new dashboard view requires the solvebio python module >= 1.5.2 and app credentials.
The JS view obtains a SolveBio OAuth2 token from a view within the django_solvebio app (part of the solvebio module).

Signed-off-by: David Caplan <dcaplan@gmail.com>