better integration : automatic token and username in example template

tracim/tracim/controllers/root.py

 from tracim.model.serializers import Context
 from tracim.model.serializers import CTX
 from tracim.model.serializers import DictLikeClass
+from tracim.lib.jitsi_meet.jitsi_meet import JitsiMeetRoom
 
 
 class RootController(StandardController):
         user = tmpl_context.current_user
         current_user_content = Context(CTX.CURRENT_USER).toDict(user)
         fake_api = Context(CTX.CURRENT_USER).toDict({'current_user': current_user_content})
+        room = 'test'
+        token = JitsiMeetRoom.generate_token(room)
 
-        return DictLikeClass(fake_api=fake_api)
+        return DictLikeClass(fake_api=fake_api,
+                             token=token,
+                             room=room)

tracim/tracim/templates/videoconf.mak

         var options = {
 	    // jitsi-meet support now(10-2017) only one way to auto-auth, token,
 	    // which is anonymous BOSH auth with specific url (with token value in params of the url).
-	    jwt:"INSERTTOKENHERE",
-            roomName : "test",
+            jwt: '${token}',
+            roomName : '${room}',
             parentNode: document.querySelector('#jitsi'),
 	    // has external API use iframe, height is a problem
             height: 800,
         // when others clients use resource part of the Jabber id to do it.
         // That's why displayName compat with others XMPP client is not optimal.
         // check this : https://github.com/jitsi/jitsi-meet/pull/2068
-        api.executeCommand('displayName', 'Bidule');
+        api.executeCommand('displayName', '${fake_api.current_user.name}');
         // We can override also avatar.
         api.executeCommand('avatarUrl', 'https://avatars0.githubusercontent.com/u/3671647');
     </script>