Fixes a crash when tapping the first comment in the list on iOS 5.
Clear delegate on reader detail dealloc

Scroll view caused some random crash
Revert 1f7b1be and clear highlighted status on reuse.

Applying the transform to the content view displayed a weird white
border at the top
Fixed aliased edges on pressed reader cell
Removed failed avatar logging
Dismiss the detail viewcontroller after changing topics on the ipad.
Refresh the reader post list after changing topics on the ipad.
Merge branch 'reader' of https://github.com/wordpress-mobile/WordPress-iOS into reader