Provide a purchase detail view in Phortune
Summary: Ref T2787. This provides a purchase detail screen (which has nothing useful on it yet) and converts a bunch of PHIDs into slightly more useful links.
Test Plan: Browsed around my account.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T2787
Differential Revision: https://secure.phabricator.com/D10284