Add Measurements tab and #new form

config/locales/en.yml

@@ -62,6 +62,12 @@ en:
       revert: Revert
       sign_out: Sign out
       source_code: Get code
+  measurements:
+    navigation: Measurements
+    index:
+      new_quantity: Add selected
+      new_children: Add children
+      new_subtree: Add subtree
   quantities:
     navigation: Quantities
     no_items: There are no configured quantities. You can Add some or Import from defaults.

config/routes.rb

@@ -1,4 +1,6 @@
 Rails.application.routes.draw do
+  resources :measurements
+
   resources :quantities, except: [:show], path_names: {new: '(/:id)/new'} do
     member { post :reparent }
   end