Fix one more call to addExtraQuicksandConfig()

Summary:
Fixes T9881. This one had Quicksand spelled as "QuickSand" (with capital "S") so it probably didn't get hit by grep.

Didn't need to do any special magic with the footer, as far as I can tell.

Test Plan: Loaded project board view, seemed to work OK (no footer, nav works, title works, mobile menu sane).

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T9881

Differential Revision: https://secure.phabricator.com/D14626