prevent overlong select boxes (FS#2817)

Brazilian Portuguese language update

added default icon to pagetools

de/de-informal: localization updates (delete user function)

Extension manager: add language file and simple admin component

Extension manager: implemented more extension info and basic repository access

rename event to TEMPLATE_DOKUWIKI_PAGETOOLS_DISPLAY

also made it more secure against copy'n'paste

added aria roles to search and acl manager

added aria attributes for footnote tooltips

add csv export functionality to the user manager

removed unused and old hasFlash() JS function

added aria attributes to edit mode

update config metadata comments for parameter '_multiple'

Extension manager: First draft of the extension class

add html5 attributes to email fields of the config manager

add html5 'email' type to the user manager forms

FS#2751 - self deletion of user account

Remove search_references() and the refshow configuration option

The refshow configuration option wasn't used as described anymore
already in the latest release and after the introduction of the medi

Remove search_references() and the refshow configuration option

The refshow configuration option wasn't used as described anymore
already in the latest release and after the introduction of the media
usage index the parameter is also no longer relevant for internal
optimization. The only place where it was still used is the no longer
used search_references()-function which is removed here, too.

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added aria attributes to tree and show/hide functions

removed possibility to have rtl.less files in plugins

switched to LESS variables in rest of template's css files

unlessified and lessified a few more css

fixed broken structure

Don't recommend the deprecated default template for JS debugging

removed debug statement. sorry