Improvements to full text search

Ryan and I noticed that if you search a term with and without quotes you get different lists returned, with the former producing the more likely target return. For example, searching for "ave maris stella" (with quotes) returns a "better" result than the same search without the quotes. Most users will not think to use quotes so it seems the searches should be optimized to put quotes around the search terms, display those results first, and then repeat the search for the non-quoted string and append that search result (omitting redundancies of course)

No files or tests are named. Start by locating the full-text search entry point and comparing the quoted and unquoted query behavior; done means quoted matches appear first, unquoted matches are appended, and duplicate results are omitted.

Written by the indexing model from the issue text.