Story/cite 185 - Managed authorities page should be filterable by import source

[PradnyaC11]

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Managed authorities page should be filterable by import source

... Put ticket description here and add link to ticket ...
Once we know where an authority entry came from, it should be possible to filter the entries on the “Manage Authority Entries” page by source (e.g. show all from Viaf).

https://diging.atlassian.net/browse/CITE-185

Are there any other pull requests that this one depends on?

diging/citesphere-model#48

Anything else the reviewer needs to know?

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[diging-jenkins]

Can one of the admins verify this patch?