Update AFNetworking to 1.1.0.

For fixes to compiler warnings.
Xcode 4.6 project updates and fix new warnings.

Xcode suggested the updates to project.pbxproj. The rest of the fixes are for
new warnings.
Post notifications asynchronously on main queue.

No need for observers to jump through hoops to get on the main queue.
Remove notification main queue contortions.

All of our notifications are always posted from the main queue.
Check for new tags up to thrice as often.
Simplify showing new thread tags.

Not sure why all that bookkeeping seemed necessary. Just reload the cells that
might have been affected and call it done.
Remove dead code.
Fix NSURLErrorDomain error -999.

Since networking isn't always up when we refresh a list in -viewWillAppear:, we
also refresh when network reachability changes. If this happens quick enough,
we could end up refreshing a second time before the first refresh is done. Now
we only refresh on reachability changes if we're not already refreshing.
Add LF-dad thread tag

Apparently there is a phiz-dad and an LF-dad. They are the exact same
image, just with different names. We had phiz but not LF.
Update hpple.
Leper's Colony networking, parsing, and viewing.

closes #139
Show Leper's Colony as a pseudo-forum.

It's not important enough to be its own tab. Not sure I like it at the bottom
of the Forums list, but not sure where else to put it.
Leper's Colony dark mode.
Don't show the same ban twice.

Without this deduplication, the following can happen:

1. Load first page. Note last ban on page.
2. Meantime, someone new gets banned.
3. Load second page. First ban on page 2 is the last ban on page 1.
4. Enjoy reading the same ban twice.

It's not a big deal, but it looks really stupid.
Thread tag UIImages get right scale.

They're bundled in the app as @2x images, but without the @2x in the filename
(since we use the filename for other things), so we need to manually set the
scale.
Don't error out making imageless tab items.
Quiet Xcode error on category method thinger.
Remove unnecessary TODO.
dev.forums.somethingawful.com
Use JSON for thread lists.