added an empty message for the case of an aspect with no friends

app/views/aspects/_empty_messages.haml

app/views/aspects/index.html.haml

app/views/aspects/show.html.haml

app/views/js/_websocket_js.haml

app/views/shared/_aspect_friends.haml

public/javascripts/view.js

public/stylesheets/application.css

public/stylesheets/sass/application.sass