add jrails, work on comments

vendor/plugins/jrails/rails/init.rb

@@ -0,0 +1,16 @@
+# The following options can be changed by creating an initializer in config/initializers/jrails.rb
+
+# jRails uses jQuery.noConflict() by default
+# to use the default jQuery variable, use:
+# ActionView::Helpers::PrototypeHelper::JQUERY_VAR = '$'
+
+# ActionView::Helpers::PrototypeHelper:: DISABLE_JQUERY_FORGERY_PROTECTION
+# Set this to disable forgery protection in ajax calls
+# This is handy if you want to use caching with ajax by injecting the forgery token via another means
+# for an example, see http://henrik.nyh.se/2008/05/rails-authenticity-token-with-jquery
+# ActionView::Helpers::PrototypeHelper::DISABLE_JQUERY_FORGERY_PROTECTION = true
+
+#ActionView::Helpers::AssetTagHelper::JAVASCRIPT_DEFAULT_SOURCES = ['jquery','jquery-ui','jrails']
+#ActionView::Helpers::AssetTagHelper::reset_javascript_include_default
+require 'jrails'
+require 'jquery_selector_assertions' if Rails.env.test?