Fixes a crash when tapping the first comment in the list on iOS 5.
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
Fixes infinite scroll. Calles the super method to trigger load more. Passes the correct param depending on the endpoint.