Test topic for the gource visualization

Post 1. /1/raw. There should also be a /1.

Post 2. /1/raw. Reply to the topic in general, so to post 1.

Post 3. /1/raw. Should there also be /1/3. An actual reply to post 1.

Post 4. /1/3/4/raw. Nothing else.

Post 5. /1/3/raw + /1/3/5

Post 6. /1/3/5/raw and nothing else.