Added custom-template in examples, as a base template to integrate easily other JS widgets.

Added custom example (based on custom-template project) that demonstrates how to integrate a thirdparty JS component such as d3 within the application using wsf_js_widget.

Removed various unecessary ecf dependencies.

draft/library/server/wsf_js_widget/examples/custom-template/README.md

@@ -0,0 +1,7 @@
+EWF JS WIDGET TEMPLATE PROJECT
+=================
+
+
+Getting Started
+- Copy and rename the custom-template folder 
+- And start hacking ;-D