Therefore, replace the directories in the Apache config upon installation.

This functionality used to be there, but evidently got lost in this commit:
ccbf1497

- Updated Linux Distribution detection to recognize all wheezy sub versions correctly.

Moved check_recipient_access to the front. Blacklist for recipients is ignored on outgoing mails via smtp auth otherwise.

- Added function to detect the apache version to installer.
- Added support for apache 2.4 to vhots templates for ispconfig vhost and apps vhost in installer.

Fixed: FS#3350 - [Dovecot] Warning: mysql: Query failed, retrying: Unknown column 'filter' in 'where clause'

Fixed: FS#3032 - dovecot: master: Warning: /var/www/clients/client20/web36/log is no longer mounted. If this is inten