Authority searching fails after too many authorities are deleted

[Steve Callender]

Evergreen 3.8+

When an authority is deleted/removed it looks like it leaves behind it's entries in the authority.full_rec table. Too many of these, will cause searching to fail since it still grabs the data from that table but has no matching authority.record_entry to go with it, causing search to load a bunch of entry entries that won't show on the screen. This means that a regular author search may only retrieve a handful of results due to the extra cruft loading behind the scenes.

The authority.full_rec table should have the record field designated as a foreign key to the authority.record_entry(id) table.