Visualize Hi-C files using Juicebox without relying on an iframe

[luistoptal]

Pull request for issue: #329

IMPORTANT: as this is builds on top of #2091, please merge that PR before this one

• Add a juicebox Hi-C viewer

How to test?

• test Scenario: Juicebox tab should pass
• in http://gigadb.gigasciencejournal.com/dataset/100020 there should be a juicebox tab
• selecting an item in the dropdown should load and display a hic map (can take some seconds)

How have functionalities been implemented?

Both HiGlass and Juicebox were considered. For a comparsion, check the comments in #329

HiGlass looks better, it is more performant, and has more features, but it is also more complex to implement. For our use case juicebox seems to be sufficient

To implement Juicebox, this was taken as a reference: https://github.com/igvteam/juicebox.js/blob/master/examples/juicebox-api.html

Any issues with implementation?

Someone with access to AWS should upload a .hic file for testing purposes and then this would be replaced in the tests. The ideal candidate would be one lightwewight hic file already being used in production

Such files should probably be publicly accessible

Any changes to automated tests?

Added Scenario: Juicebox tab