R1:b10428fe60da

Link to a specific Phabricator version from stack trace

Summary: Line numbers and file paths may be different in current version.

Test Plan: Disabled editor, issued exception, clicked on the link.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D2886