fix security caution for 'remote' setting (was 'xmlrpc')

Italian language update

replace preset _cautionList property with _caution config metadata parameter, plugins can now easily set cautions on their settings

fix security caution for 'remote' setting (was 'xmlrpc')

FS#2722 add settings_regex class, use it for hidepages

remove no longer used email pattern, validation is done by mail_* functions

remove php_strip_whitespace() alternate, no longer required as php min req't ensures its always present

add comments for recent settings class additions to extra.class.php

removed a bunch of functions which were deprecated in 2005/2006

improve comments on settings::update() method

tidy up authtype setting class (incl. fix issue with auth change/logoff occurring when only one auth plugin is enabled and other settings are updated)

add property to show disabled plugins, set it to false (to hide by default)

fixed html error in plugin lang file

separate default settings from non-existing settings
setting type read from metadata eqaul to empty string is default 'setting' class (a textarea), everything else should be a existing class otherwis

separate default settings from non-existing settings
setting type read from metadata eqaul to empty string is default 'setting' class (a textarea), everything else should be a existing class otherwise 'setting_no_class' is loaded

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Add django compatible hashes to the config options.

removed useless css from config manager (causing issues in Opera, FS#2678)

allow richer email addresses in notify and registernotify FS#2689

This deprecates the "richemail" config class

Greek language update

Galician language update

touch the config on save, even if no changes were made

added SHA512 hashing method FS#2663

added mediawiki password method FS#2559

This should make migrating from MediaWiki a bit easier.

Turkish language update

Catalan language update

fixed problems with spaced arrays