Jobs and workflows do not load historical values if originally not selected

[schuylerfried]

If you select only pipelines, load data for a couple months, then decide you also want workflows and jobs, workflows and jobs for those last couple months won't be loaded. To fix this, we'll need to add bookmarks for workflows and jobs and make sure that

1. pipelines that have already been loaded but which contain new workflows and jobs are still accessed to retrieve the new workflows and jobs (but that duplicate records aren't written).
2. workflows that have already been loaded but which contain new jobs are still accessed to retrieve the new jobs (but that duplicate records aren't written)