R1:c20b7540c9a7

Merge "Profile" and "Account" settings panels

Summary: There are only a total of three options now, merge them into a single panel.

Test Plan:
Set all the settings.

{F49406}

Reviewers: btrahan, chad

Reviewed By: chad

CC: aran

Differential Revision: https://secure.phabricator.com/D6400