we restored and improved the plain text mail functionality.
the mail is sent from the current user if possible.
the configuration got its own place in the admin area.
the table of contents macro works correctly in sent pages.
we also fixed several smaller bugs.
In HTML mails, dynamically generated macro content will not always be styled correctly.
In some cases, pages containing macros that generate content dynamically cannot be sent at all
If sent as plain text mails, dynamically generated macro content will not be there at all.