fixed bug that prevented using the tree without overriding getNodeImage method
fixed bug that prevented using the tree without overriding getNodeImage method


git-svn-id: ac804e38dcddf5e42ac850d29d9218b7df6087b7@456763 13f79535-47bb-0310-9956-ffa450edef68

bitstorm/wicket,mosoft521/wicket,mafulafunk/wicket,mosoft521/wicket,freiheit-com/wicket,dashorst/wicket,AlienQueen/wicket,topicusonderwijs/wicket,Servoy/wicket,zwsong/wicket,bitstorm/wicket,klopfdreh/wicket,AlienQueen/wicket,apache/wicket,aldaris/wicket,selckin/wicket,astrapi69/wicket,bitstorm/wicket,apache/wicket,mosoft521/wicket,dashorst/wicket,astrapi69/wicket,topicusonderwijs/wicket,bitstorm/wicket,zwsong/wicket,martin-g/wicket-osgi,AlienQueen/wicket,selckin/wicket,selckin/wicket,apache/wicket,Servoy/wicket,topicusonderwijs/wicket,selckin/wicket,mosoft521/wicket,astrapi69/wicket,Servoy/wicket,selckin/wicket,mosoft521/wicket,mafulafunk/wicket,aldaris/wicket,klopfdreh/wicket,AlienQueen/wicket,topicusonderwijs/wicket,aldaris/wicket,Servoy/wicket,zwsong/wicket,aldaris/wicket,AlienQueen/wicket,Servoy/wicket,freiheit-com/wicket,klopfdreh/wicket,aldaris/wicket,mafulafunk/wicket,astrapi69/wicket,freiheit-com/wicket,dashorst/wicket,dashorst/wicket,klopfdreh/wicket,bitstorm/wicket,topicusonderwijs/wicket,dashorst/wicket,freiheit-com/wicket,klopfdreh/wicket,apache/wicket,martin-g/wicket-osgi,freiheit-com/wicket,martin-g/wicket-osgi,apache/wicket,zwsong/wicket