item groups now have order - start page is now item group 1 (configurable in globals)

front-api/models/item.rb

@@ -4,6 +4,9 @@ class Item < ActiveRecord::Base
   has_many :multi_media_descriptions
   belongs_to :sub_category
 
+  has_many :item_groups, through: :item_in_groups 
+
+
   attr_accessor :count # used for cart
   def attributes
     super.merge('count' => self.count)

front-api/models/item_group.rb

@@ -1,8 +1,10 @@
 class ItemGroup < ActiveRecord::Base
-	has_and_belongs_to_many :items, :join_table => 'item_item_groups'
+
+	has_many :item_in_groups
+	has_many :items, through: :item_in_groups
 
 	def all_items(offset, limit)
-		self.items.where(on_display: true).order(:created_at).limit(limit).offset(offset).all
+		self.items.where(on_display: true).order("item_in_groups.position").limit(limit).offset(offset).all
 	end
 
 end

front-api/models/item_in_group.rb

@@ -0,0 +1,4 @@
+class ItemInGroup < ActiveRecord::Base
+	belongs_to :item_group
+	belongs_to :item
+end