fixed info/error messages in RTL languages

de/de-informal: config plugin - Clean up the TOC in the configuration page / No need to add "Konfiguration" or "Plugin" to every element if the heading tells you that.

de/de-informal: language updates for the core, authldap, authmysql, authpgsql

Add missing jQuery-UI image and update update script

For just one image another syntax was used, this fixes the update script
to also fetch this image.

Update settings.php

Update metadata.php

Without this unable to access AD info. Also allows SSO.

Update default.php

Wihtout this, unable to fetch any AD info.. also allows SSO.

German (informal) language update

Korean language update

Brazilian Portuguese language update

upgrade jQuery scripts

jQuery 1.9.0 had a bug in replaceWith() that got fixed in 1.9.1 - to
ensure compatibility I upgraded the whole suite to their current
releases.

refactor fetch to support unittesting

add a token to fetch urls requiring image resize/crop to prevent external DDOS via fetch

removed unsused translation file

Simplified Chinese language update

Esperanto language update

typo fix

French language update

Traditional chinese language update

fixed use of removed plugin function in revert plugin (FS#2744)

Bulgarian language update

added loggedIn class to main tpl container

there's no pragma: private

max-age not allowed with no-cache

adjusted cache=0 headers again