iframe-test: separated out the levo and dextro sliders, and added handlers to the ee readout
iframe-test: separated out the rotation slider, the pie chart and the bar chart.

I now see what Young Suk was saying about needing to replicate the relationship
between values controlled by various brix in other objects.

The pie chart and the ee readout are examples of this. They both need to update a local cached value of levo and dextro or they would need a way to query values from those brix in order to update themselves.
Merge pull request #79 from mlippert/kantor-iframe

updated Kantorowski iframe test files