Extracted the WIDGET and FORM classes out of "cms" component

and build the wsf_html library which also include the previous css lib.

library/server/wsf_html/widget/wsf_widget.e

@@ -0,0 +1,22 @@
+note
+	description: "Summary description for {WSF_WIDGET}."
+	author: ""
+	date: "$Date$"
+	revision: "$Revision$"
+
+deferred class
+	WSF_WIDGET
+
+feature -- Conversion
+
+	append_to_html (a_theme: WSF_THEME; a_html: STRING_8)
+		deferred
+		end
+
+	to_html (a_theme: WSF_THEME): STRING_8
+		do
+			create Result.make_empty
+			append_to_html (a_theme, Result)
+		end
+
+end