Improved GenericIndex widget.

app/assets/javascripts/app/controllers/_application_controller_generic.js.coffee

@@ -112,6 +112,7 @@ class App.ControllerGenericIndex extends App.Controller
     @navupdate @pageData.navupdate
 
     # bind render after a change is done
+    if !@disableRender
       @subscribeId = App[ @genericObject ].subscribe(@render)
 
     App[ @genericObject ].bind 'ajaxError', (rec, msg) =>
@@ -126,9 +127,11 @@ class App.ControllerGenericIndex extends App.Controller
     @render()
 
     # fetch all
+    if !@disableInitFetch
       App[ @genericObject ].fetch()
 
   release: =>
+    if @subscribeId
       App[ @genericObject ].unsubscribe(@subscribeId)
 
   render: =>