LP#1321017: Order constituent records by quality

LP#1321017: Order constituent records by quality

Previously, in some cases (often needlessly) we oredered constituent
records within a metarecord by a combination of type/form/blvl.  This
is not only of little use, but also expensive.  Instead, order them
by the bib's calculated quality, which takes type/form/blvl into account
already.

Also, use the new metabib.record_sorter to find the title tie-breaker
instead of using the view-of-a-view-of-a-view mrd compatability shim.

The net result is several orders of magnitude speed increase for constiuent
record retrieval.

Signed-off-by: Mike Rylander <mrylander@gmail.com>