Revert "removecomments"

This reverts commit 6ee1468ce3.

db/migrate/20140723172934_create_comments.rb

@@ -0,0 +1,19 @@
+class CreateComments < ActiveRecord::Migration
+  def change
+    create_table :comments do |t|
+      t.integer :user_id
+      t.integer :commentable_id
+      t.string :commentable_type
+      t.text :text
+      t.integer :parent_id
+      t.integer :lft
+      t.integer :rgt
+      t.integer :depth
+      t.boolean :hidden
+      t.boolean :official
+      t.boolean :intern
+      t.boolean :anonym
+      t.timestamps
+    end
+  end
+end