Removed idn2ascii filter from mail pattern field in spamfilter_users form as the filter alters the pattern so that the wildcard pattern @. is not possible.

- removed most static content from scrigo

- cleaned up some javascript

Fixed error in Mail-Backup-Cron-Task (created file /dev/nul - missing l)

Fix for mailrestore, to avoid confusion about web- and mail-backups with same ids