Task log to record history

[jkeifer]

Should capture all file changes, downloads, and possibly error as well.

I am not sure how to implement this yet, but I am mulling it over to see what I come up with. I will update this ticket as the details become clearer.

A first note is that the log can easily be recursively defined, such that an entry will be related to the actual object affected and its parent. Then lower-level objects can get the history for inner objects by querying for it's ID in the parent field, recursively deeper until all records are returned.