[addons] Renamed update() directives to commands
Make EventPluginUtils clear dispatchIDs and dispatchListeners

The other dispatch utils clear these out and I found a bug where they weren't being cleared out.
I'm thinking this should probably be done in the `SyntheticEvent` constructor but at least this way it's consistent. Also, I know no one else uses `executeDispatchesInOrderStopAtTrue` except the `ResponderEventPlugin`.
Restore CSSTransitionGroup tests

Not sure what happened here.

Test Plan: grunt test
Merge pull request #1324 from jordwalke/executeDispatchesInOrder

Make EventPluginUtils clear dispatchIDs and dispatchListeners
Merge pull request #1405 from spicyj/css-tests

Restore CSSTransitionGroup tests
Merge pull request #1284 from plievone/directives-2-commands

[addons] Renamed update() directives to commands