Fixed the Configuration class
Fixed the Configuration class

It now supports XML config files properly and the default value for the
logo works when the site is not at the root of the domain.

claudusd/SonataAdminBundle,gnorby88/SonataAdminBundle,jakublech/SonataAdminBundle,amine2z/SonataAdminBundle,qsomazzi/SonataAdminBundle,fosvn/SonataAdminBundle,ellementA/SonataAdminBundle,robhunt3r/SonataAdminBundle,ARTACK/SonataAdminBundle,morfin60/SonataAdminBundle,Th3Mouk/SonataAdminBundle,sonata-project/SonataAdminBundle,ryanhughes/SonataAdminBundle,mikemeier/SonataAdminBundle,gRoussac/SonataAdminBundle,arbislimen/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,ksom/SonataAdminBundle,greg0ire/SonataAdminBundle,jlamur/SonataAdminBundle,Th3Mouk/SonataAdminBundle,Storke/SonataAdminBundle,peter-gribanov/SonataAdminBundle,morgangiraud/SonataAdminBundle,jszmidt/SonataAdminBundle,Th3Mouk/SonataAdminBundle,mgdigital/SonataAdminBundle,fosvn/SonataAdminBundle,mohebifar/SonataAdminBundle,osavchenko/SonataAdminBundle,ellementA/SonataAdminBundle,news-life-media/SonataAdminBundle,Denniskevin/SonataAdminBundle,rschumacher/SonataAdminBundle,dmarkowicz/SonataAdminBundle,ellementA/SonataAdminBundle,FabienD/SonataAdminBundle,joshlopes/SonataAdminBundle,rmzamora/SonataAdminBundle,jszmidt/SonataAdminBundle,idchlife/SonataAdminBundle,ossinkine/SonataAdminBundle,FabienD/SonataAdminBundle,dmarkowicz/SonataAdminBundle,ju1ius/SonataAdminBundle,ryanhughes/SonataAdminBundle,core23/SonataAdminBundle,mikemeier/SonataAdminBundle,digitalkaoz/SonataAdminBundle,vincenttouzet/SonataAdminBundle,j-ledoux/SonataAdminBundle,peter-gribanov/SonataAdminBundle,news-life-media/SonataAdminBundle,jordisala1991/SonataAdminBundle,dmarkowicz/SonataAdminBundle,Armstrong1992/SonataAdminBundle,ossinkine/SonataAdminBundle,lightglitch/SonataAdminBundle,morfin60/SonataAdminBundle,jordisala1991/SonataAdminBundle,joshlopes/SonataAdminBundle,rswork/SonataAdminBundle,tunne/SonataAdminBundle,robhunt3r/SonataAdminBundle,tunne/SonataAdminBundle,FabienD/SonataAdminBundle,robhunt3r/SonataAdminBundle,nexylan/SonataAdminBundle,jlamur/SonataAdminBundle,ryanhughes/SonataAdminBundle,greg0ire/SonataAdminBundle,gRoussac/SonataAdminBundle,rmzamora/SonataAdminBundle,jlamur/SonataAdminBundle,ARTACK/SonataAdminBundle,binhle410/SonataAdminBundle,Romashka/SonataAdminBundle,news-life-media/SonataAdminBundle,0mars/SonataAdminBundle,peter-gribanov/SonataAdminBundle,jszmidt/SonataAdminBundle,mohebifar/SonataAdminBundle,robhunt3r/SonataAdminBundle,binhle410/SonataAdminBundle,goldbroker/SonataAdminBundle,lightglitch/SonataAdminBundle,jordisala1991/SonataAdminBundle,lutangar/SonataAdminBundle,Storke/SonataAdminBundle,Denniskevin/SonataAdminBundle,digitalkaoz/SonataAdminBundle,joshlopes/SonataAdminBundle,mgdigital/SonataAdminBundle,ryanhughes/SonataAdminBundle,fosvn/SonataAdminBundle,vincenttouzet/SonataAdminBundle,ejkun/SonataAdminBundle,Romashka/SonataAdminBundle,rmzamora/SonataAdminBundle,j-ledoux/SonataAdminBundle,rschumacher/SonataAdminBundle,ellementA/SonataAdminBundle,jakublech/SonataAdminBundle,davidromani/SonataAdminBundle,vincenttouzet/SonataAdminBundle,jakublech/SonataAdminBundle,andythorne/SonataAdminBundle,tim96/SonataAdminBundle,Koc/SonataAdminBundle,ellementA/SonataAdminBundle,qsomazzi/SonataAdminBundle,goldbroker/SonataAdminBundle,mikemeier/SonataAdminBundle,morfin60/SonataAdminBundle,amine2z/SonataAdminBundle,nexylan/SonataAdminBundle,ruscon/SonataAdminBundle,ksom/SonataAdminBundle,claudusd/SonataAdminBundle,rswork/SonataAdminBundle,mweimerskirch/SonataAdminBundle,FabienD/SonataAdminBundle,sonata-project/SonataAdminBundle,Th3Mouk/SonataAdminBundle,jordisala1991/SonataAdminBundle,cmacetko/SonataAdminBundle,jlamur/SonataAdminBundle,ruscon/SonataAdminBundle,lutangar/SonataAdminBundle,tunne/SonataAdminBundle,gnorby88/SonataAdminBundle,0mars/SonataAdminBundle,binhle410/SonataAdminBundle,gnorby88/SonataAdminBundle,rswork/SonataAdminBundle,morgangiraud/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,ju1ius/SonataAdminBundle,mweimerskirch/SonataAdminBundle,news-life-media/SonataAdminBundle,nexylan/SonataAdminBundle,core23/SonataAdminBundle,OskarStark/SonataAdminBundle,ejkun/SonataAdminBundle,tskorupka/SonataAdminBundle,ju1ius/SonataAdminBundle,gnorby88/SonataAdminBundle,Romashka/SonataAdminBundle,Koc/SonataAdminBundle,jlamur/SonataAdminBundle,tim96/SonataAdminBundle,vincenttouzet/SonataAdminBundle,osavchenko/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,arbislimen/SonataAdminBundle,mweimerskirch/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,davidromani/SonataAdminBundle,lightglitch/SonataAdminBundle,osavchenko/SonataAdminBundle,tskorupka/SonataAdminBundle,idchlife/SonataAdminBundle,qsomazzi/SonataAdminBundle,cmacetko/SonataAdminBundle,rschumacher/SonataAdminBundle,arbislimen/SonataAdminBundle,osavchenko/SonataAdminBundle,j-ledoux/SonataAdminBundle,tunne/SonataAdminBundle,goldbroker/SonataAdminBundle,claudusd/SonataAdminBundle,Koc/SonataAdminBundle,Storke/SonataAdminBundle,ossinkine/SonataAdminBundle,dankempster/SonataAdminBundle,morfin60/SonataAdminBundle,mgdigital/SonataAdminBundle,ksom/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,Armstrong1992/SonataAdminBundle,dankempster/SonataAdminBundle,jakublech/SonataAdminBundle,ARTACK/SonataAdminBundle,mohebifar/SonataAdminBundle,ARTACK/SonataAdminBundle,nexylan/SonataAdminBundle,arbislimen/SonataAdminBundle,gRoussac/SonataAdminBundle,dankempster/SonataAdminBundle,Denniskevin/SonataAdminBundle,tim96/SonataAdminBundle,binhle410/SonataAdminBundle,morfin60/SonataAdminBundle,joshlopes/SonataAdminBundle,edouardkombo/SonataAdminBundle,tskorupka/SonataAdminBundle,goldbroker/SonataAdminBundle,OskarStark/SonataAdminBundle,ejkun/SonataAdminBundle,osavchenko/SonataAdminBundle,gRoussac/SonataAdminBundle,Storke/SonataAdminBundle,idchlife/SonataAdminBundle,0mars/SonataAdminBundle,tskorupka/SonataAdminBundle,greg0ire/SonataAdminBundle,rswork/SonataAdminBundle,morgangiraud/SonataAdminBundle,morgangiraud/SonataAdminBundle,ruscon/SonataAdminBundle,rschumacher/SonataAdminBundle,j-ledoux/SonataAdminBundle,Koc/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,mikemeier/SonataAdminBundle,ejkun/SonataAdminBundle,qsomazzi/SonataAdminBundle,core23/SonataAdminBundle,mohebifar/SonataAdminBundle,binhle410/SonataAdminBundle,rmzamora/SonataAdminBundle,dmarkowicz/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,Denniskevin/SonataAdminBundle,lutangar/SonataAdminBundle,mweimerskirch/SonataAdminBundle,davidromani/SonataAdminBundle,andythorne/SonataAdminBundle,claudusd/SonataAdminBundle,digitalkaoz/SonataAdminBundle,mgdigital/SonataAdminBundle,dmarkowicz/SonataAdminBundle,idchlife/SonataAdminBundle,tim96/SonataAdminBundle,core23/SonataAdminBundle,edouardkombo/SonataAdminBundle,fosvn/SonataAdminBundle,edouardkombo/SonataAdminBundle,OskarStark/SonataAdminBundle,ruscon/SonataAdminBundle,lutangar/SonataAdminBundle,Soullivaneuh/SonataAdminBundle,andythorne/SonataAdminBundle,news-life-media/SonataAdminBundle,dankempster/SonataAdminBundle,cmacetko/SonataAdminBundle,0mars/SonataAdminBundle,ossinkine/SonataAdminBundle,Romashka/SonataAdminBundle,OskarStark/SonataAdminBundle,amine2z/SonataAdminBundle,andythorne/SonataAdminBundle,ksom/SonataAdminBundle,jszmidt/SonataAdminBundle,ejkun/SonataAdminBundle,cmacetko/SonataAdminBundle,amine2z/SonataAdminBundle,lightglitch/SonataAdminBundle,Romashka/SonataAdminBundle,UnDeleteRU/SonataAdminBundle,ju1ius/SonataAdminBundle,digitalkaoz/SonataAdminBundle,greg0ire/SonataAdminBundle,edouardkombo/SonataAdminBundle,j-ledoux/SonataAdminBundle,peter-gribanov/SonataAdminBundle