R1:1fa307750d13

Embed slowvotes have basic interaction

Summary: User can now vote through embed slowvote

Test Plan: Voted'n stuff

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin, chad, AnhNhan

Maniphest Tasks: T2883

Differential Revision: https://secure.phabricator.com/D5743