Use Source Sans for Phriction

Summary: Adds Phriction to list of apps that use Source Sans as default font in addition to Legalpad and Diviner.

Test Plan: Tested various layouts imported from secure. Should be reasonably tested, but will follow up on secure.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Differential Revision: https://secure.phabricator.com/D10064

src/applications/phriction/controller/PhrictionDocumentController.php

@@ -208,6 +208,7 @@ final class PhrictionDocumentController
 
     $page_content = id(new PHUIDocumentView())
       ->setOffset(true)
+      ->setFontKit(PHUIDocumentView::FONT_SOURCE_SANS)
       ->setHeader($header)
       ->appendChild(
         array(