R1:eeb359bae6f5

Make D3123 more consistent

Summary:
Put the function in the base class so all the Diffusion views
can use it. Also use shinier tooltips.

Test Plan: Browse Diffusion.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3206