Bug 863335 - Download Update via data screen update
(cherry picked from commit e69553c36894979e0be587fe2b172a8b6795d803)

Conflicts:

	apps/system/style/update_manager/update_manager.css
	shared/style/confirm.css
(cherry picked from commit b0aca0dd1e2955e11190ede725e1fb9ee596438b)

Conflicts:

	apps/system/style/modal_dialog/prompt.css