Use conf['apr_mail_receiver'] also as bool option

Add a message only visible to admins, if the address is configuered (and
hence the option is activated), but the configured address is invalid.

Add conf-option to send mails on change & approve

Copy language and configuration from suggestion plugin

Add option to hide the banner, if the page is approved

Fixed translation name in settings.php

add explanation of how to include multiple namespaces in the (en) settings (will need added for other languages)

switch to stronger semantic html element

grammar correction

Add a non aproval field in the conf

hide banner to read only users

added optional attic deletion on first approve

added internal only note

added publisher group

added option to hide drafts from read-only users

wording fix

removed approve button from edit form

use multible approvers

the plugin now requires a given number of approvers
to show a document as approved.

initial commit