added a global config file
refactored config code: it is now a controller
a controller user everytime, like usercontroller. This way, it is still accessible from other controllers AND is declared before the View class which might need config values
now works both with and without Apache URL rewriting
updated version number + display it in views footer
added a $rootUrl to the view for direct links (because now, $baseUrl might have a ?p= at the end)
also added some information on the homepage about the different variables accessibles from the views