[Myfaces Wiki] Update of "Tree2" by AlexAlvarez

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The following page has been changed by AlexAlvarez:
http://wiki.apache.org/myfaces/Tree2

The comment on the change is:
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  /dmc
  
+ If you are unable to set-up the ExtensionsFilter, you can use the imageLocation attribute (ex. imageLocation="images") to specify the directory where the images will be taken from.
+ 
  === Alternative way to use Tree2 in a Portal...by BenSmith ===
  I was able to get tree2 (and the other MyFacesExtensionsFilter-dependent controls) working in a portlet by using the Portals Bridge [http://portals.apache.org/bridges/multiproject/portals-bridges-portletfilter/index.html Portlet Filter]
  along with the Tomahawk Bridge filter and the Faces Response filter by Shinsuke Sugaya: