Changes to chartBarHorizontal interface.

Remove showAxes(). Fix bug where showAxes was returned instead of showXAxis or showYAxis. Update spec to check these return values.
Reorder examples.
Update data() examples to be like the others.
Add axis settings and associated specs for chartStream.

DRY the specs by moving shared specs for charts to SpecHelper.js.
Change chart title.
Make style settable. Show max and min on x axis.