boost document titles and add support for exact matches. refs #19 #20
boost document titles and add support for exact matches. refs #19 #20

we were't grouping fields, so `token_text:"foo bar"` was being expanded
to `token_text:"foo token_text:bar"`. we just needed some parens :P

dnephin/TracAdvancedSearchPlugin,dnephin/TracAdvancedSearchPlugin