Comment 12 for bug 1821094

I have force-pushed fixes to all the issues that John discovered in testing. Let me know what you think!

Here are updated testing notes from the updated commit:

To test:
1) Create a file with 500 or more item barcodes.
2) Load your file into Item Status.
3) Select a few rows.
4) Go to Actions > Edit > Items.
5) Make some changes, then Save and Exit.
6) Time how long it takes between clicking
"Save and Exit" and when the grid actually
refreshes.
7) Repeat steps 2-6, but use Actions > Edit
> Call Numbers instead.
8) Apply this commit.
9) Repeat steps 2-7. The time should be much
faster with this commit.
10) Verify that no columns lose their data
when refreshed, especially monograph parts
and in-house use count.
11) Note that there is also a progress bar.