Coverage calc excluding specific occurences

**Story:** https://www.pivotaltracker.com/story/show/63217518

- Added <code>updatedRationale()</code> method to <code>result</code> model for retrieving the <code>rationale</code> hash excluding specific occurrence criteria that were marked as <code>false</code>
- Included commented-out code for a simple logic view highlighting-debug, which can be used to verify correct coverage computation, if necessary