Now pressing the enter key will exit the keyboard instead of clearing
filtered results.
Test: manual
Bug: 269200077
Change-Id: I9b717aa3300cad1eede874108e50dd62eeec82ff
Search will recursively go into each preference group and set visibility of preferences based on title match. If a preference group (category) has no preferences, we will hide that preference group as well.
All queries and titles are sanitized by turning them to lower case and replacing underscores with spaces for convenience.
Change-Id: Ibdc689d74d0c872c92c1d523bbc0efdb9e31aecd