Add option "set_folder_permissions_on_update" in server config to configure if folder permissions should be forced on web update.

- Set error reporting level in app inc.

- Added error_reporting level in app.inc.php to E_ALL & ~E_NOTICE

Fixed: FS#1915 - The first argument to copy() function cannot be a directory in cron_daily.php on line 232

- Added functions to start / stop / restart virtual machines to the remote api.

Fixed: FS#1896 - Bug in mailfilter file when maildrop tries to create the mailsize file of non existing accounts

- Select sieve template depending on dovecot version as doevceot 1.0 does not support the new date based autoresponders.
- Cleaned up opensuse dovecot-sql.conf file

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- Fixed a problem with german umlauts in monitor.
- Added code to update.php and autoupdate.php that checks the mysql root password before the update starts.
- Fixed: FS#1848 - changing password of ssh user >>> rights in webXX are changed

Fixed: FS#1801 - german specialchars making trouble in logs

- Fixed php notices in dashboard.