Sort plugin excludes batchNum; Maybe fires unnecessary events

[akagomez]

can.batch.start();
listB.push({ id: 'a' });
listB.push({ id: 'a' });
listB.push({ id: 'a' });
can.batch.stop();

"// BATCHED; SORTED..."
"    Sorted..." // <-- Upon creating the list
"    Sorted..." 
["type:", "length", "batchNum:", undefined]
["type:", "length", "batchNum:", 9] // <-- This event caused the sort
"    Swapped? 1, 2"
["type:", "length", "batchNum:", undefined]
["type:", "length", "batchNum:", 9] // <-- This event caused the swap
["type:", "length", "batchNum:", 9]

The Sort plugin fires events like length, add, reset, etc. for can.view.live.list and does nothing to pass along the original batchNum that instigated the work.

Since the current Sort plugin is derived from the previously incomplete Sort plugin, those events were left in/adapted. I'm curious to know if we can do without them all together.

http://jsbin.com/poduxa/6/edit?js,console

[daffl]

Closed via #1718