code style: line breaks

coding style: control flow whitespaces

codestyle adjustments: function declaration braces/spaces

codestyle adjustments: class declaration braces

Apply remaining rector fixes to lib

Apply rector fixes to config plugin

an empty class is valid, only truly no class is bad

show other errors in undefined settings again

This reestablishes the mechanism of adding errors as Sepcial classes to the
undefined list.

do not drop undefined settings when saving the configuration

fixed updateSettings iteration

Moved settings to their own namespace

first go over the settings classes for PSR-2

moved language loading to the loader

adjusted basic loading saving in admin

stripped out all the session stuff

added Writer class for saving the config back to file

moved the whole settings class mechanism to it's own class

moved php parser to it's own file

start of refactoring the config plugin

split up all the files and added namespaces. everything broken