YodaQAApp.main() throws Exception
YodaQAApp: Convert from CPE descriptors to uimaFit-based pipeline

We aim to completely migrate to uimaFit. It is much more convenient
and will enable us to use the DKPro wrappers.

This currently does not properly phase out discarded CASes, causing
extraneous "No answer found" outputs. We will fix that later too.