Dog profile updates 

Summary of files i updated:
	modified:   app/assets/javascripts/wall.js
	modified:   app/assets/stylesheets/wall.css
	modified:   app/controllers/comments_controller.rb
	new file:   app/views/dogs/_bio.html.erb
	modified:   app/views/dogs/_comment.html.erb
	modified:   app/views/dogs/_wall.html.erb
	modified:   app/views/dogs/show.html.erb
	new file:   app/views/messages/_new.html.erb