Comment 2 for bug 1749593

Here's a branch based on a comment from Bill Erickson in IRC (http://irc.evergreen-ils.org/evergreen/2018-02-14#i_345818):

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/dyrcona/lp1749593-fix-set-grid-dataprovider-grid

It works for me, so I'm adding the pullrequest tag. Looks like it probably needs to be backported to rel_3_0 also, but I leave that as an exercise for the tester.