Need new attribute for labels to indicate if it is an agreed label or
a label data point.


One file per domain study.
  Include full sketches and all labels
One file per labelset.
  include only strokes and labels
  Pointer to sketch id?  No, the id will take care of that


Tables for the dump file:
authors
classes
devices
hand_classified_strokes
pen_modifiers
sketches
stroke_types
strokes
studies



One file that has all of the strokes:


======================================================================
General Data

Strokes:
study author sketch id path times

======================================================================
Final data

Labels:
id canbe isa best context

======================================================================
Label data

Labelings:
stroke_id labeler condition {labels}

