do not require confirm action on destroyRecord from a modal for new non persisted records

addon/mixins/modal-base.coffee

@@ -118,14 +118,20 @@ export default Ember.Component.extend
           if my_scope.get('router.globals.current_route.path')?.match("^#{flat_model_name}.show")
             my_scope.get('router').transitionTo flat_model_name
 
-      @modal 'confirm',
-        title_path: @get('modal_options.destroy_text_path') || 'general.destroy.are_you_sure'
-        model: @get('model')
-        ok: ->
-          model = @get("model")
-          model = model.get("_content") if model.__changeset__
-          model.destroyRecord().then -> destroy_callback.call(my_scope, model)
-          @send 'closeModal' unless @preventClose
+      if @get('model.isNew')
+        model = @get('model')
+        model = model.get("_content") if model.__changeset__
+        model.destroyRecord().then -> destroy_callback.call(my_scope, model)
+        @send 'closeModal' unless @preventClose
+      else
+        @modal 'confirm',
+          title_path: @get('modal_options.destroy_text_path') || 'general.destroy.are_you_sure'
+          model: @get('model')
+          ok: ->
+            model = @get("model")
+            model = model.get("_content") if model.__changeset__
+            model.destroyRecord().then -> destroy_callback.call(my_scope, model)
+            @send 'closeModal' unless @preventClose
 
     closeModal: ->
       container = Ember.getOwner(@)