This reverts commit ca7c77d9

Warning: Please read Merge Request! This might cause Apache not to listen on custom ports!

Improved ispconfig.vhost for apache so that the sethandler directive does not affect other software which is accessed trough aliases.

ISPConfig itself does not read nor interpret this header, but there might be other
server components like PHP that might interact with it so I'll disable it just to be sure.

https://mozilla.github.io/server-side-tls/ssl-config-generator/

Updatet ispconfig.vhost tpl inside installer with new SSL Options - SSLCipherSuite - SSLHonorCipherOrder - Header always add Strict-Transport-Security - SSLUseStapling - SSLStaplingResponderTimeout - SSLStaplingReturnResponderErrors - SSLStaplingCache

 - Reason:
   AddHandler fcgid-script .php
   does not only parse .php files, but all .php.* (e. g. .php.txt, .php.test etc.)

- 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.

Reverted SVN trunk back to revision 3938 to remove changes in default theme an a replacement of the ispconfig logo.

- Added backup size to web backups

Put vlogger log directives in separate apache config file so they are available for the websites even if the controlpanel is not installed on the server.