R1:44415c54739e

Make Fund transactions more informative and complete

Summary: Ref T5835. Show backing amounts in transactions. Account for and show refunds.

Test Plan: {F215869}

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T5835

Differential Revision: https://secure.phabricator.com/D10676