Improve Visual Score Explanation
The explanation of the score (more-or-less directly from Lucene) is too complex:
One should note that the bottom part contains the MUST conclusion match (boost of 1, not shown) which of course has the same idf and tfNorm values as in the MAY conclusion match above (boost of 0.5). So we could merge them (i.e., boost 1.5) to make things (in my opinion) way simpler.
However, it may be hard to introduce simplifications that still work if we change the retrieval function (or even the framework like in #36). Or if we introduce other argument types (as in #17 (closed)) which will bring their own retrieval function with them.
But I guess changing the retrieval function is a rare event.