LP#1773832: Empty deleted records can be surfaced in search results

LP#1773832: Empty deleted records can be surfaced in search results

There are cases where we avoid checking the deleted flag of bibs as an
optimization that avoids a JOIN in the search query.  However, for some
shapes of real-world data, particularly in upgraded instances, deleted
records can slip through.  This commit adds an explicit check for the
flag to all search queries.

Signed-off-by: Mike Rylander <mrylander@gmail.com>
Signed-off-by: Daniel Pearl <dpearl@cwmars.org>
Signed-off-by: Jason Stephenson <jason@sigio.com>