[Redesign] Fix alignment of icon/grip on ObjectList

Summary:
Ref T8099, these should sit in a 4px gutter.

Also:

• remove bad route on feed
• Fix issue with custom logos
• Fix unit error

Test Plan: Review on dashboards and on Maniphest homepage

Reviewers: btrahan, epriestley

Reviewed By: epriestley

Subscribers: epriestley, Korvin

Maniphest Tasks: T8099

Differential Revision: https://secure.phabricator.com/D13310