More third-party browsers.

- Axis
- Diigo
- Dual Browser
- Puffin
- Sleipnir
- Terra
Fix reply screen after saying "Nope" when posting.

It wouldn't let you tap around it, though you could continue typing.
Fix crash dismissing profile from thread list.
Fix profile view orientation in iOS 5.

Still some weirdness when the split view's master view is visible on rotate, but
I don't care.