- Make sure tar backups are not deleted because of a return value of 1; tar can return 1 because of harmless warnings but still produces valid backups.

- cron_daily.php: "quota ok" messages are now also sent if quota is set to unlimited; before, when a quota warning was sent and the quota was then set to unlimited, no "quota ok" message was sent because of SQL query that looked for records where quota > 0.

  - send quota notifications each X days instead of each day
  - send notification when quota is ok again
  - cleaned up mail sending code

- added german translation

Bugfix: Typo in db_backup path that leads to a crashing daily cron if the backup path does not exist

 - log parsing did not recognize lines with multiple recipients
 - spamfilter_users added to datalog status messages

Bugfix: Backup did not work correctly on multiple databases in one web. "X Copies" were not preserved per database so not all databases were backed up
Bugfix: Select box did behave strange in some cases

- Added intval function from interface functions library to server system library.

Links removed from sum rows in stats

- Added overtraffic notifications to traffic quota system (part of FS#2059 - Extend Traffic quota system)

- install: touch auth.log
- login: write success/fail to auth.log
- cron: log rotation for auth.log

- Added "actions" framework in server to replace the functions provided by the core modules
- Moved system update function from remoteactins core module to software update plugin.