Add Quantity #reparent action

config/locales/en.yml

@@ -68,6 +68,7 @@ en:
       destroy: Delete
     index:
       new_quantity: Add quantity
+      top_level_drop: Drop here to reposition into top-level quantity
     create:
       success: Created new quantity "%{quantity}"
     update:

config/routes.rb

@@ -1,6 +1,6 @@
 Rails.application.routes.draw do
   resources :quantities, except: [:show], path_names: {new: '(/:id)/new'} do
-    member { post :rebase }
+    member { post :reparent }
   end
 
   resources :units, except: [:show], path_names: {new: '(/:id)/new'} do