Text to go in the release notes:
This enhancement changes the OPAC maintenance page* so that it uses the email address from the ReplyToDefault system preference, if it is set, for the "please contact the site administrator" email link.
If ReplyToDefault is not set, it will use KohaAdminEmailAddress.
If both ReplytoDefault and KohaAdminEmailAddress are not set, no link is shown.
* Displays when the OpacMaintenance system preference is set to "Show".