Use text, not icons, to indicate content sources
Summary:
oh god everyone hates this
revert revert
https://www.facebook.com/photo.php?fbid=787360256660&set=p.787360256660&type=1&theater
(I left the icons themselves since I have some plans to do other things with
them.)
Test Plan: I am not good at designer
Reviewers: ola, elynde, bh, ashwin, jungejason, kdelong, zrait, tomo, aran
Reviewed By: aran
CC: aran, epriestley, tomo
Differential Revision: 885