R1:5039b9ca28e4

Add some descriptive properties when viewing a Calendar import

Summary: Ref T10747. When viewing an import detail page, show a little more information about what you're looking at.

Test Plan: {F1876957}

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10747

Differential Revision: https://secure.phabricator.com/D16726