[Redesign] Update Conduit UI

Summary: Ref T8099, Updates the Conduit UI for the Redesign.

Test Plan: Bop through conduit, add application headers, fix icon colors.

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T8341, T8099

Differential Revision: https://secure.phabricator.com/D13049