Comment 3 for bug 2028411

Working branch user/jeffdavis/lp2028411-self-registration-blurbs-2 has a potential implementation:

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/jeffdavis/lp2028411-self-registration-blurbs-2

This branch adds a couple of settings to config.tt2 allowing you to add text at the top of the form (ctx.register_intro), immediately above the submit button (ctx.register_submit_notice), or both. Examples are provided but both settings are disabled by default. If we like this approach, I'll add a release note and target to the next release.

Another option would be to use a library setting. I went with config.tt2 because it feels like the right way to control what's displayed in the OPAC, and because it avoids the risk of an injection attack via library settings.