Thanks Till for this nice release!
I've tested WebDAV and it works great!
For the ones who don't know the address for webDAV is: domainname.tld/webdav
One more suggestion:
In the ISP manager, under the user & mail tab, you can read the settings for each user which is valid on a particular domain.
I mean the settings like: Email, Admin and CatchAll.
It would be nice if extend this overview with "WebDAV" and "SSH", so you can see which users on the domain have access by using the WebDAV and/or SSH protocol.