Switch to smarter iOS 7 UITextView fixes.

The other way was error-prone and done in the view controller. This way it's
done in the text view itself.
Attempt fix for disappearing table cell separators.

I couldn't consistently replicate the bug so I'm not actually sure it's fixed.
Added banlist to AwfulURL
Inverted Smilies for Dark Theme

Inverted colors for smilies that have black text on transparent
background through css.
Fixed dead stores to make static analyzer happy
Override post button per-forum
Cache selectors to avoid re-parsing them constantly
Fix non-dismissing PM compose view
Fix for previous bad code in ed82ab2309

scanUpToString  != scanString
Change setter-only “topPost” property to just a setter.

An ivar and getter were being created for this property, but not used anywhere.  The recent Xcode beta was generating this helpful warning:

 Ivar '_topPost' which backs the property is not referenced in this property's accessor
Rap sheet “Nothing to see here” matches theme
Removed post borders in fyad

The borders added to the top and bottom of posts doesn’t fly in FYAD.
Additional theme tweaks probably need to be down to FYAD to make it a
little cleaner.
Darker Dark Theme

Made all values a pinch darker. Also all text bumped from #fff to #ddd.
Update README.

* Mention Themes.plist for non-posts view customization.
* Delete mention of obsolete features.
* Specify iOS 7.
Version bump.
Fix scraping tests.

The recently added cached CSS selector parsing wasn't part of the test target.
Hamburger icon for iPad expand / collapse

Crudely replaced the contract / expand images, which confused people.
Should probably just change the code to reference the hamburger icon
that already exists and delete these assets.
Use hamburger button for expand/contract.

Shitty expand/contract images aren't used anymore, so they can be deleted.
Fix permanently-disabled submit button in compose view.

I didn't notice the one line of the change in
1ef2fcd64e71ddc67c3c906105b6f344643c771a that called -updateSubmitButtonItem.
Fix for status bar not hiding in image preview controller due to iOS7 changes

Used built-in animation for removing the navigation bar instead of the fade because it handles the change in frame way more smoothly