Merge moderator and creator module

• Remove moderator module
• Use edit route prefix for moderators too
• Adjust creator room page to use them as moderator too
• Adjust comment page component to use for moderation too
• Redirect from moderator to edit
• Adjust routing service to make this work

For testing: Everything should just work as before. The only noticeable difference should be the route.

Closes #596 (closed)