bigbluebutton link in footer

app/views/layouts/application.html.erb

@@ -56,7 +56,7 @@
 
     <!-- Footer -->
     <div class='footer text-center'>
-      <%= t('powered_bigbluebutton') %>
+      <%= t('powered_bigbluebutton_html', link: link_to('BigBlueButton', 'http://bigbluebutton.org/', target: "_blank")) %>
     </div>
     <!-- End of Footer -->
   </body>

config/locales/en-us.yml

@@ -54,7 +54,7 @@ en-US:
   no: No
   oauth_signup: Signup for customized sessions
   past_recordings: Past Recordings
-  powered_bigbluebutton: Powered by BigBlueButton
+  powered_bigbluebutton_html: Powered by %{link}
   presentation: Presentation
   return_to_room: Return to your personal room
   session_url_explanation: The session will be taking place using the following URL