Hide Leper's Colony when logged out.
Filter out useless stuff from GitHub Pages.
Reload forums list on appear.

Since we ignore the NSFetchedResultsControllerDelegate calls when we're not
visible, we need to reload when we are visible.
Switch back to forums.somethingawful.com

I don't think the dev.forums redirects worked 100%.

Also switch JSON requests that aren't in production to only use JSON on
dev.forums. While the Forums will simply give us HTML if they don't support
JSON yet, we don't want an incompatible JSON output to go into production and
make everyone crash.
Formatting.