[Koha] A feature I thought I remembered testing

[Nicole Engard]

Hello all,

I think I'm going crazy cause I could have sworn I tested a
development ages ago that made it so that if a message is triggered on
checkin you have to acknowledge it before you can check out another
item. I'm unable to find this a patch/development/bug on this.  So
feel free to tell me I have no idea what I'm talking about - or even
better if you can point me to what I remember that would be awesome.

Nicole