Use a more conventional spelling of "Almanac" for "almanac.service.edit" class

Summary: Depends on D19335. Ref T13120. Ref T12414. There are many good ways to spell "almanac", but stick with convention here.

Test Plan: (O_O)

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13120, T12414

Differential Revision: https://secure.phabricator.com/D19336