Fix bug in ResourceManager.
Fix bug in ResourceManager.

Signed-off-by: Jan Sutter <12df6c48459509f2371b1550777dd93767f1241d@dfki.de>

Fiware/webui.Xml3d.js,CCLDESTY/xml3d.js,ariyapour/xml3d.js,CCLDESTY/xml3d.js,Fiware/webui.Xml3d.js,ariyapour/xml3d.js,xml3d/xml3d.js,xml3d/xml3d.js