Clean the parsers and introduce the metas

app/models/meta/meta.rb

@@ -0,0 +1,11 @@
+class Meta
+  
+  include Mongoid::Document
+  include Mongoid::Timestamps
+    
+  field :key
+  field :value, :default => nil
+
+  has_one :i18n_variable, :as => :language_value, :autosave => true, :dependent => :destroy
+  
+end

app/models/meta/page_meta.rb

@@ -0,0 +1,5 @@
+class PageMeta < Meta
+  
+  belongs_to :page
+  
+end

app/models/meta/site_meta.rb

@@ -0,0 +1,5 @@
+class SiteMeta < Meta
+  
+  belongs_to :site
+  
+end