Use available copy summary in record detail page

Use available copy summary in record detail page

Having removed the copy info matrix/table from the record detail
page, we now replace it with the new available copy summary from
the search results page.

When there are copies at multiple libraries, display a total
count of available copies at each library.

When there are copies available at only one library (which also
happens when search is scoped to one library), display a count
of available copies grouped by copy shelving location and call
number label.

Signed-off-by: Jeff Godin <jgodin@tadl.org>