Created ingredients controller

command: rails generate redmine_plugin_controller body_tracking
ingredients index create destroy

db/migrate/001_create_units.rb

@@ -18,6 +18,7 @@ class CreateUnits < ActiveRecord::Migration
     end
 
     create_table :ingredients do |t|
+      t.references :project
       t.string :name
       t.decimal :ref_amount
       t.references :ref_unit