- Retrieve the parent post no matter what. Previously it was depending on the user's settings, which gave unpredictable behavior if the parent post wasn't retrieved for whatever reason.
- List possible reasons the conversation isn't showing up based on the condition in Model\Post::selectViewForUser
- Allow HTML in exception messages
- Module init, post and rawContent-triggered HTTPException generate the classic bare HTTP status page
- Module content-triggered HTTPException generate themed error pages
- Trim System::httpExit to the bare minimum
