Improved faukt tolerance of the server.sh process when master DB becomes inavailable during script run multiserver setup.

- Added mousedown event to readonly tab (web domain and web vhostsubdomain forms) so that select boxes do not expand (Chrome, IE, Safari).

- Changed regex for redirect path (Web sites, subdomains, vhost subdomains, alias domains) and web folder (vhost subdomains) so that ".." is not allowed (in order to prevent path traversals).
- nginx: don't allow folders for proxy redirects (subdomains and alias domains); URL is required.
- nginx: modified rewriting.

 - included a maximum loop count of 10 on connection errors
 - added check of mysqli ping() result

- nginx_merge_locations function now supports locations that are in one line (like "location /webftp/conf/ { deny all; }").

- Disabled "fastcgi_param PATH_INFO $fastcgi_script_name;" in nginx vhost template (see http://gunblad3.blogspot.de/2009/07/nginx-php-fpm-serverphpself-returning.html ).

 - on new vhost subdomain the php modes were not correctly displayed (nginx)
 - on vhost subdomains and domains the default php mode stated "fastcgi" even if it was not available

 - passwords are now enrypted already in tform (and remoting) and not stored in datalog clear text
 - clientdb plugin no longer encrypts password itself but receives crypted password

Removed font declaration from drop downs

Fixed: FS#2593 - PHP Warning: chmod(): No such file or directory in /root/ispconfig3_install/install/dist/lib/debian60.lib.php
Fixed: FS#2595 - postfix RSA certificate generation.
 - Postfix SSL Key is now 4096 bit for greater security

Disabled ipv6 mirror rewriting in this release. This feature is still under development and will get added in 3.0.6

- Adde some missing strings to translations in faq module.