Include standard fields as scoring metrics Merged

At the moment, there is no way to link the built in fields for feature type or remaining effort as metrics within a scorecard. In fact, no ordinary Aha data can be used for Metrics - the whole scoring exists in a separate universe. Why can't we reach to ordinary fields - what is the point of entering effort estimates, categorising, or any data really, if it cannot be used in scoring? Other trivial factors for scoring would be the age of the idea/feature.