Merge branch 'feature/non_absolute_footer' into feature/refactor-work-package-index-styling

Signed-off-by: Alex Coles <alex@alexbcoles.com>

Conflicts:
	app/assets/stylesheets/layout/_base.sass
[wip] Add alternate layout for work package views

Absolutely position page "chrome" (top and main menus, footer).

Signed-off-by: Alex Coles <alex@alexbcoles.com>