AnswerRanker: Fix missing answersByText map reset on next question
AnswerRanker: Copy QuestionInfo to FinalAnswerCAS
QuestionAnalysis: Switch from createPrimitiveDescription() to createEngineDescription()
Introduce Maven profile 'interactive' for running the default frontend

We'll add another frontend momentarily, and Maven profiles seem to be
the only way to conveniently support them. :(
YodaQA_GS, io.collection: New YodaQA interface for gold standard testing
YodaQAApp -> YodaQA_Interactive, for consistency with YodaQA_GS
YodaQA_*: FIXME regarding code duplication
GoldStandardAnswerPrinter: Fix regex matching to allow partial line matches