Improve quick search to factor in provided full names.
Improve quick search to factor in provided full names.

When searching for a full name using quick search, we end up not showing
any results. The string "firstname lastname" is no longer considered
something that either first_name or last_name starts with, given the
space.

We now look for the space and attempt to do a more intelligent full name
search. We break it into two strings and check the first/last name
against that, and then the last/first name, in case the ordering is
different in the profile.

I also cleaned up a bunch of redundant code that didn't need to be there.

Testing Done:
Tested all the existing quick search functionality.

Tested typing "Christian H", and saw the matches. Also tried "Hammond C".

Reviewed at https://reviews.reviewboard.org/r/7059/

chipx86/reviewboard,reviewboard/reviewboard,reviewboard/reviewboard,brennie/reviewboard,KnowNo/reviewboard,sgallagher/reviewboard,brennie/reviewboard,bkochendorfer/reviewboard,beol/reviewboard,chipx86/reviewboard,chipx86/reviewboard,davidt/reviewboard,reviewboard/reviewboard,beol/reviewboard,davidt/reviewboard,bkochendorfer/reviewboard,chipx86/reviewboard,beol/reviewboard,sgallagher/reviewboard,brennie/reviewboard,custode/reviewboard,custode/reviewboard,KnowNo/reviewboard,sgallagher/reviewboard,KnowNo/reviewboard,brennie/reviewboard,bkochendorfer/reviewboard,davidt/reviewboard,sgallagher/reviewboard,custode/reviewboard,reviewboard/reviewboard,KnowNo/reviewboard,bkochendorfer/reviewboard,custode/reviewboard,davidt/reviewboard,beol/reviewboard