Misc changes for R3 upgrade:
- Fix add comment functionality
- Add routing for comments controller
- Modify routing to use standard collection/member functionality
- Update form error reporting to new syntax
- Downgrade acts_as_commentable gem to '3.0.1' for Rails 3
- Set whitelist attributes to false to avoid commentable errors
Changes for Rails 3.x mailer
Merge branch 'r3_upgrade' of https://github.com/suegrimes/oligo_exome.git into sue_r3upgrade

Conflicts:
	Gemfile.lock
	app/views/layouts/v8_exome.rhtml
	app/views/oligo_designs/list_selected.html.erb
	app/views/shared/_add_comment.html.erb
	app/views/shared/_edit_comment.html.erb
	app/views/shared/_errors.html.erb
	app/views/shared/_show_comments.html.erb
	app/views/users/forgot.html.erb
	app/views/users/new.html.erb
	app/views/users/reset.html.erb
	config/routes.rb
Merge remote-tracking branch 'origin/sue_r3upgrade' into r3_upgrade