Updated lodel2 UI schema in documentation

doc/img/graphviz/lodel2_ui.dot

@@ -1,15 +1,19 @@
 digraph Lodel2_architecture {
 	
+	user [label="Lodel user"]
 	ui [label="<ui> UI|{web|cli|lodel2fs}|<tpl> templates", shape=record]
 
 	action [label="{user|action|target}|<datas> datas}", shape=record]
 	ACL
 	leapi [label="LeAPI"]
 
+	user -> ui
+	ui:tpl -> user
 	ui:ui -> action
 	action -> ACL
 	ACL -> leapi
 	action:datas -> leapi
 	leapi -> ui:tpl
+	leapi -> leDataSource [dir=both]
 
 }