Remove obsolete blender package, add JSON plugins package

JME3TestsTemplate/nbproject/project.properties

@@ -26,7 +26,7 @@ includes=**
 jar.compress=false
 javac.classpath=\
     ${libs.jme3-jogg.classpath}:\
-    ${libs.jme3-blender.classpath}:\
+    ${libs.jme3-plugins-json.classpath}:\
     ${libs.jme3-networking.classpath}:\
     ${libs.jme3-plugins.classpath}:\
     ${libs.jme3-core.classpath}:\