Fix container navigation view controller being inited twice.

- `+new` == `+alloc` and `-init`.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Fix question table view cells not having a white background.

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>
Disable auto layout for post body cell.

- Tried to fix the bug where we get conflicting auto layout constraints
when we move back to the questions tab and are displaying a specific
questions. This only moved the issue to another cell…

Signed-off-by: Aron Cedercrantz <aron@cedercrantz.se>