[web] Render account settings when in right path

Summary:
Render account settings when in settings/account route. There's currently only one type of settings, but we still should check if the right one was selected (account)
Depends on D3324
Depends on D3344

Test Plan: Open settings/account URL and check if settings were rendered

Reviewers: benschac, atul, def-au1t

Reviewed By: atul

Subscribers: ashoat, Adrian, karol-bisztyga

Differential Revision: https://phabricator.ashoat.com/D3345