Standardize testing output

[tabergma]

Description of Problem:
For intents we currently have the following testing output: report, error, successes, confusion matrix, histogram. However, for stories, entities, and responses only some of those outputs exists. We should standardize the testing output so that you have the same tool to evaluate intents, entities, responses, and stories.

Overview of the Solution:

• For entities we need to add the confusion matrix and the histogram.
• For responses we need to add everything except the report.
• For stories we need to actually write the report and add successes.