REF: Move webuse. Closes #1571.
REF: Lazy fix for circular import
DOC: Add webuse to datasets docs
STY: Pep-8 cleanup
Merge pull request #1973 from jseabold/expose-webuse

REF: Move and expose webuse
REF: graphics violin_plot change face color, see #1226
DOC: add ipython notebook for boxplots