New feature: alternate Item / Thread sorting.

When perusing items, you now have two methods with which to view threads within items (in addition to the "Thread Forwards / Thread Backwards" user setting.

The first is "Latest Thread." This is the classic sorting of idkfa threads when perusing an item. It is sorted by the order in which a thread was created, in respect to the other threads in the item. New threads? They go to the top, the rest follow.

The new one is "Latest Post in Thread," which is a slight derivation. Threads in an item are instead sorted by the latest post within the thread. That means that if somebody posts to an item in "Latest Post in Thread" sorting, that thread will go to the top, followed the the second latest post's thread, the third, and so on.

The idea behind "Latest Post in Thread" sorting is so people can tell which threads have the most recent activity, not necessarily the threads that were posted last. This is ideal in a situation where an older thread has activity, as it puts it at the top for all to see.

This is reminiscent of the type of sorting that goes on in flat forums (phpBB, SMF).