planning/timeline/timeline.2013.xls: moved "move denormalized validations to stage II", "move stage III validations to stage II" outside of "switching to new-style import" because the "switching to new-style import" step refers just to the per-datasource switching steps, not to the additional refactorings that would be needed to avoid dependency on the complex XPath mappings (mappings/VegCore-VegBIEN.csv)
planning/timeline/timeline.2013.xls: moved "move denormalized validations to stage II", "move stage III validations to stage II" outside of "switching to new-style import" because the "switching to new-style import" step refers just to the per-datasource switching steps, not to the additional refactorings that would be needed to avoid dependency on the complex XPath mappings (mappings/VegCore-VegBIEN.csv)