Use user's timezone in repo history

Test Plan: Looked at repo overview, repo history and commit detail.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D4250

src/applications/diffusion/controller/DiffusionCommitController.php

@@ -782,6 +782,7 @@ final class DiffusionCommitController extends DiffusionController {
     }
 
     $history_table = new DiffusionHistoryTableView();
+    $history_table->setUser($this->getRequest()->getUser());
     $history_table->setDiffusionRequest($drequest);
     $history_table->setHistory($merges);
     $history_table->loadRevisions();