This week should be marked with a bottom blue horizontal bar in Calendar month view.

Summary: Closes T8185, This week should be marked with a bottom blue horizontal bar in Calendar month view.

Test Plan: Open calendar month view, "this week" should show a dark blue bar under it and a lighter blue bar on "today".

Reviewers: chad, #blessed_reviewers, epriestley

Reviewed By: #blessed_reviewers, epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T8185

Differential Revision: https://secure.phabricator.com/D12862