empty-state-must-keep-its-navigation

Replace a populated header with an empty-state message without deleting the controls that header owned — re-supply them only in the branch that owned them, order the loading branch above the empty one, and stop reserving the artwork's height for a line of text. Use when a user reaches an empty period, filter or search result and cannot get back out, when an empty message flashes on every reload, or when the same…