Fix suggestion queries containing a space.

Do this by switching from a prefix search of the analyzed title to a
match of the lightly analyzed title with the edgengram analyzed title.
This mimics the current functionality.
It also handles lower casing very well so things with accents aren't
surprisingly lost.

Change-Id: I513b0b1aa35896ba346e48aa2e657f1f6447c625
Merge "Fix suggestion queries containing a space."