Bug 9407: patrons search should match substrings

Bug 9407: patrons search should match substrings

    If a patron lives at 4345 Library Rd, a search on Street Address for
    Library should find it. However, it does not, but a search for 4345
    Library does.  This patch adds a "Search Type" drop-down, defaulting
    to the current behaviour.

    To test:
    1) Search for a patron based on a non-leading part of a field.
    2) Should return no results.
    3) Search again with "Search Type" of "Contains".
    4) Should return the patron.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>