Comment 4 for bug 1717025

Thanks Jason, I've signed off on your changes, the signoff branch is here:

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/cesardv/jboyer_lp1717025_due_date_persist_signoff

I also added a commit on top that adds a few syntax/style cleanup type of fixes. Totally optional, but I'm a bit if a stickler when it comes to descriptive variable names for bools, and avoiding ambiguity and the like. See that commit's message for details.