Merge branch 'bash' into 'master'

Dash problem

Define bash as a parser, some systems can have "dash" as a "sh" that will end with errors.

/usr/local/ispconfig/server/cron_daily.sh

[: 10: root: unexpected operator

[: 10: root: unexpected operator

See merge request !201

server/cron.sh

-#!/bin/sh
+#!/bin/bash
 
 PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin
 

server/scripts/run-getmail.sh

-#!/bin/sh
+#!/bin/bash
 PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin
 set -e
 cd /etc/getmail

server/server.sh

-#!/bin/sh
+#!/bin/bash
 
 
 PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/sbin:/usr/local/bin:/usr/X11R6/bin