Make antiquarian name matches weigh more in search results

[tcouch]

Search for Marcus Terentius Varro should put Varro top

[tcouch]

Because we search antiquarians' name, introduction, and re_code fields, even a search limited to just Antiquarians wouldn't put Varro first because of the high number of other Antiquarians mentioning Varro in their introductions. We need some sort of weighting for search results such that a match with name ranks higher than a match anywhere else.

Where the search content type isn't limited to just Antiquarians we might want to think about setting a default ranking; e.g. Antiquarians > Works > Fragments. As a rule of thumb: content types with fewer items should come before those with more.