Update the ghost model on Juju ACK of machine creation instead of deleting the model
Created a yui-patches module as the sole place to put monkeypatches to the YUI source tree.
Update the machine model id when the juju ACK comes in using the new lazy-model-list method updateModelId
Created is machine committed method
Fixed tests to support new updating of machine models on creation instead of destroying
Merge pull request #504 from hatched/update-ghost-models-1348163

Updates the handling of the create machine callback handlers to update the existing model instead of destroying and re-creating

Destroying and re-creating the machine model caused the tokens to disappear then re-appear when the deltas came in. Updating the models instead keeps them in the DOM.

Created a new module called 'yui-patches' as a place to put monkey patches to the YUI codebase.