Diffusion/BrowseFile: Set highlighted with blame as default view

Summary: As per title: when browsing files in Diffusion, set "Highlighted with blame" as the default view instead of falling back to "Highlighted".

Test Plan: Tested view with a local Diffusion setup, defaults correctly.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Maniphest Tasks: T1278

Differential Revision: https://secure.phabricator.com/D2669