Added quantity filtering by domain

app/helpers/ingredients_helper.rb

@@ -15,7 +15,7 @@ module IngredientsHelper
   end
 
   def visibility_options(selected)
-    options = [["all", nil], ["visible", 1], ["hidden", 0]]
+    options = [["visible", 1], ["hidden", 0]]
     options_for_select(options, selected)
   end
 

app/helpers/quantities_helper.rb

@@ -1,11 +1,15 @@
 module QuantitiesHelper
   def domain_options
-    translations = t('.domains')
+    translations = t('quantities.form.domains')
     Quantity.domains.map do |k,v|
       [translations[k.to_sym], k]
     end
   end
 
+  def domain_options_tag(selected)
+    options_for_select(domain_options, selected)
+  end
+
   def parent_options(domain)
     options = nested_set_options(@quantities.send(domain), @quantity) do |i|
       raw("#{' ' * i.level}#{i.name}")