Upgrade yuicompressor plugin to 1.5.1 (fixes BuildBot issue: require Maven 3.1.1)
Upgrade yuicompressor plugin to 1.5.1 (fixes BuildBot issue: require Maven 3.1.1)

dashorst/wicket,topicusonderwijs/wicket,topicusonderwijs/wicket,klopfdreh/wicket,mosoft521/wicket,klopfdreh/wicket,topicusonderwijs/wicket,selckin/wicket,bitstorm/wicket,bitstorm/wicket,aldaris/wicket,dashorst/wicket,selckin/wicket,bitstorm/wicket,mosoft521/wicket,klopfdreh/wicket,mosoft521/wicket,dashorst/wicket,freiheit-com/wicket,mosoft521/wicket,freiheit-com/wicket,selckin/wicket,apache/wicket,bitstorm/wicket,aldaris/wicket,selckin/wicket,apache/wicket,klopfdreh/wicket,AlienQueen/wicket,selckin/wicket,AlienQueen/wicket,klopfdreh/wicket,dashorst/wicket,AlienQueen/wicket,freiheit-com/wicket,aldaris/wicket,AlienQueen/wicket,apache/wicket,aldaris/wicket,aldaris/wicket,freiheit-com/wicket,AlienQueen/wicket,topicusonderwijs/wicket,apache/wicket,freiheit-com/wicket,bitstorm/wicket,dashorst/wicket,topicusonderwijs/wicket,mosoft521/wicket,apache/wicket