Created 2.8.x branch
Fixed some validiation bugs in core and different modules (Thanks to luisehahne)
special chars like are shown when editing Add-on CSS files (ticket #678)
Added Javascript syntax highlighting framework EditArea as replacement for Codepress.
removed some obsolete language variables from news and form module (now defined in global WB language files)
Added keyword Id to new files
Moved edit module CSS functions from modules to WB core (avoid code duplication; improve maintenance of code)