      Changed SharedResource to ResourceReference.  ResourceReference does not inherit       from Resource since it is a reference to a resource and not an actual resource now.       Added StaticImageResourceReference to make it easy to create references to static       image resources.  See the Tree class for an example usage.  SharedResourceLink       was changed to ResourceLink.
      Changed SharedResource to ResourceReference.  ResourceReference does not inherit
      from Resource since it is a reference to a resource and not an actual resource now.
      Added StaticImageResourceReference to make it easy to create references to static
      image resources.  See the Tree class for an example usage.  SharedResourceLink
      was changed to ResourceLink.


git-svn-id: ac804e38dcddf5e42ac850d29d9218b7df6087b7@456425 13f79535-47bb-0310-9956-ffa450edef68

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