Merge pull request #8889 from KevinGrandon/bug_855084_week_view_header

Bug 855084 - Move all-day header into week frame r=lightsofapollo(cherry picked from commit bdc26bc623b01d61d2f7748dcaa0d79650f1fd82)

Conflicts:
	apps/calendar/style/week_view.css
	apps/calendar/test/unit/views/week_test.js