IE11 - Unable to view metadata

[richardhallett]

On a DOI page
e.g. https://doi.test.datacite.org/dois/10.5072%2Fbc11-cqw1

Using the dropdown to choose metadata type produces JS errors
namely:

https://app.bugsnag.com/datacite/doi-fabrica/errors/5a58943f0bc9620018d73088?filters[event.since][0]=30d&filters[error.status][0]=open&filters[browser.name][0][value]=IE&filters[browser.name][0][type]=eq

and

https://app.bugsnag.com/datacite/doi-fabrica/errors/5a2e997b5f5a39001940bba3?filters[event.since][0]=30d&filters[error.status][0]=open&filters[browser.name][0][value]=IE&filters[browser.name][0][type]=eq

Reproduce:

1. Goto DOI's
2. Choose any DOI.
3. Use the dropdown to change to different metadata types.

[richardhallett]

This was fixed as part of #56
It wasn't actually IE11 specific, it just occurred during testing of IE11, the bug was related more to how we parse a status message response back from the server.