For some of the queries, the fuzzy lookup was not filtering properly.
The problem is due to the "replace" beind made on the query itself. It
accidently removes only the first underscore. This patch changes it so
that it removes all of the whitespaces, letting the fuzzy algorithm do
its magic, also fixing this problem.

Originally, the underscore were replaced by a space for this specific
reason, to let the user type a space and have the lookup treat it as the
word break.

Fixes #2380

The fuzzy library didn't try to find a "best match", but settled on the
first fuzzy match that exists. This patch includes a modified version of
the fuzzy library, which recursivley tries on the rest of the search
string to find a better match. If found, returns that one.

Another small modification is that if a pattern fully matches, it
skips the lookup entirley and returns the highest score possible for
that match.