added Database-Quota dashlet

fixed small bug in mail-backup-cron

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

Falko Timme authored Jan 09, 2015 and Patrick Anders committed Jan 09, 2015

- Made sure SQL backups from servers that differ from the server where the website is on can be restored. A download of the backup is not possible in such a case, therefore I hide the "Download" button.

Conflicts:
	interface/lib/classes/plugin_backuplist.inc.php

- Responsive fixes

- Included new icons and buttons
- Layout scaling improved (up to 1260px width)

- Select2 combobox

- New dashboard layout

Removed possibility of reinstalling Instances

DMARC requieres SPF and DKIM (this breaks the current draft but DMARC is useless if you use spf OR dkim)