R1:9dfe65b7f0a6

Remove action list bg on phui-document

Summary: Slightly cleaner UI. //innovation//

Test Plan: reload page, see cleaner ui. Test mobile, tablet breakpoints

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin, chad

Differential Revision: https://secure.phabricator.com/D8649