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

If you change an auto subdomain of an alias/web-domain there has to be checked if a subdomain with www. or *. has been created already.

Implemented: FS#2427 - Allow wildcard subdomain creation on limit_wildcard = y 

- New feature: you can now add directive snippets for Apache, nginx, and PHP under System > Directive Snippets. These snippets are then available on the Options tab of a web site where they can be easily added to the respective textarea by simply clicking the name of the directive snippet.

Bugfix on db-Class (datalog Update)

- Fixed missing templates and language entries
- Previous subdomain mode can be used concurrently
- Changed log path to a more convenient location

FS#1993 - Creating Subdomains as VirtualHost

Addes some missing translations

Fixed (partly) FS#2310 - Template switch not working in mailuser module, for dashlets and the login page