Summary: Ref T4712. This adds pagination. Future diffs will need to deploy `buildTransactionTimeline` everywhere and massage this stuff as necessary if we hit any special cases.
Test Plan: Set page size to "5" to make it need to paginate often. Verified proper transactions loaded in and the javascript actions worked.
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: Korvin, epriestley
Maniphest Tasks: T4712
Differential Revision: https://secure.phabricator.com/D10887
