SOLR bug. deal with suggestions with space in them.

hi 
there are 2 commits here. the first adds a 'kwargs' parameter. pretty trivial (i think).

the more interesting change is to how solr submits it's query. as previously

foo bar would convert to 
title_ngram:foo bar
which means search title_ngram for 'foo' AND the default for 'bar'. which causes an error