Removed obsolete 3.0.4 theme. This theme does not work with the current version anymore.

Author: Till Brehm

install/lib/installer_base.lib.php

@@ -2248,6 +2248,7 @@ public function cleanup_ispconfig() {
 
 		// Remove directories recursively
 		if(is_dir('/usr/local/ispconfig/interface/web/designer')) exec('rm -rf /usr/local/ispconfig/interface/web/designer');
+		if(is_dir('/usr/local/ispconfig/interface/web/themes/default-304')) exec('rm -rf /usr/local/ispconfig/interface/web/themes/default-304');
 
 		// Remove files
 		if(is_file('/usr/local/ispconfig/interface/lib/classes/db_firebird.inc.php')) unlink('/usr/local/ispconfig/interface/lib/classes/db_firebird.inc.php');