created migration to add columns to comments table for polymorphic associations
	modified:   Gemfile
added 'meta_request' gem to allow RailsPanel to work. this is used for debugging.

	modified:   db/schema.rb
ran db:migrate for the changes maded to comments table for polymorphic so rails generated this file.
removed protect_from_forgery because the controller is already inherting from the application controller
	modified:   app/models/comment.rb
  added in polymorphic associations

	modified:   app/models/event.rb
  updated association to comments to account for polymorphic association to comments
	modified:   app/models/user.rb
  updated association to users to account for polymorphic association to comments

	modified:   db/migrate/20130607184849_add_column_to_comments_for_polymorphic.rb
  fixed mistake in the fields' names for polymorphic association