Comment 5 for bug 1981628

My feeling is that if there are negative bills then the patron should see the alert to contact their library about them regardless of whether or not online payments are allowed. So, this additional followup separates that alert from the myopac_cc_allowed logic.

This also makes some minor display tweaks to the BooPAC:
- Applies the Bootstrap 'alert-warning' to the negative bills message in the BooPAC.
- Adds a page header.
- Changes the styling and wording of the grocery charges heading to match the circulation charges heading.
- Changes the styling of the grocery and circulation tables to be consistent with each other.

https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/mccanna/lp1981623-follow-up-3