Add search filters for formats and clean up front page

Add search filters for formats and clean up front page

This uses evergreen's filter group functionality to add
"Videos", "Maps", and "Music" for limiting searches from the
basic search screen. The link to the jspac is also finally
retired and a "Start Over" link is added.

The filter group uses the following SQL:

INSERT INTO actor.search_filter_group (owner, code, label)
    VALUES (106, 'tpac_windsor', 'Windsor''s OPAC Search Filter');

INSERT INTO actor.search_query (label, query_text)
    VALUES ('Maps', 'item_type(e,f)');

INSERT INTO actor.search_query (label, query_text)
    VALUES ('Music', 'item_type(c,d,j)');

INSERT INTO actor.search_query (label, query_text)
    VALUES ('Videos', 'item_type(g)');

INSERT INTO actor.search_filter_group_entry (grp, query, pos)
    VALUES (
        (SELECT id FROM actor.search_filter_group WHERE code = 'tpac_windsor'),
        (SELECT id FROM actor.search_query WHERE label = 'Maps'),
        1
    );
INSERT INTO actor.search_filter_group_entry (grp, query, pos)
    VALUES (
        (SELECT id FROM actor.search_filter_group WHERE code = 'tpac_windsor'),
        (SELECT id FROM actor.search_query WHERE label = 'Music'),
        2
    );

INSERT INTO actor.search_filter_group_entry (grp, query, pos)
    VALUES (
        (SELECT id FROM actor.search_filter_group WHERE code = 'tpac_windsor'),
        (SELECT id FROM actor.search_query WHERE label = 'Videos'),
        3
    );

Signed-off-by: Art Rhyno <art632000@yahoo.ca>