Improve results for people with many first names

From social media feedback: "I have three first names, the third one is my primary day to day one (not uncommon for swedes). But combinations generated only care about my first first name. "

Start by locating the name-parsing and alias-combination entry points in the Node module, then reproduce the issue with a person who has three first names. Trace which first name is currently used and inspect any existing tests or examples. Done means combinations account for a later first name being the person's primary day-to-day name, with behavior covered by a regression test.

Written by the indexing model from the issue text.