General functionality improvement

app/assets/javascripts/user/app/controllers/table_controller.js.coffee

@@ -1,5 +1,5 @@
 App.TableController = Ember.ObjectController.extend
-  join_request_sent: false
+  join_request_sent: (-> @get('controllers.application.join_request_sent')).property('controllers.application.join_request_sent')
   tableCanTakeOrders: (->
     return false unless @get('supplier.can_take_orders')
     list = @get('controllers.application.list')
@@ -14,7 +14,7 @@ App.TableController = Ember.ObjectController.extend
   showJoinButton: (->
     return false unless @get('supplier.can_take_orders')
     return false if @get('controllers.application.list') # if you already have an active list, do not join another
-    if @get('model.occupied') then true else false
+    if @get('model.occupied') then true else false # no point in joining tables that are not occupied
   ).property('controllers.application.list.id', 'supplier.can_take_orders', 'model.occupied', 'model.id', 'controllers.application.list.table.id')
   actions:
     addProduct: (product)->
@@ -25,7 +25,7 @@ App.TableController = Ember.ObjectController.extend
     joinOccupiedTable: ->
       #@secured =>
       Ember.$.post('/user/join_occupied_table.json', table_id: @get('model.id'))
-      @set 'join_request_sent', true # keeps the button deactivated
+      @set 'controllers.application.join_request_sent', true # keeps the button deactivated
     toggleProductCategory: (product_category)->
       product_category.set 'collapsed', not product_category.get('collapsed')
     showProductDescription: (product)->