Comment 5 for bug 1697954

Staring on a branch here:

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/berick/lp1697954-signoff-tweaks

I've addressed 1, 2, and 4 from my last comments here. Instead of local caching, it adds support to the hold details API for fleshing additional fields. This reduced the number API calls required to render a holds grid of 50 holds from 110 to 10. I also removed some no-longer relevant comments.

I still need to add some sign-offs. I have not addressed #3 from above.

I also haven't addressed Galen's suggestion of counting first. For what it's worth, I'm much less concerned about rendering the items-out interface, since that's a single pcrud query. The real beast is the holds list, which is a sluggish API, though the fleshing changes should help some.