Modal fixes for advanced option collapse toggle and help modal

The help modal needed quite a bit of TLC to get the modal to not collapse the first time a field was updated.  This has been addressed.  Furthermore there was weirdness around the deferred chain that was set up around the modal view (it waits for a model instance to come back from the server if it's being searched for; a new one is created if not found) and the refresh of a newly found model needed to update an existing object through a form (without a cache buster, the old version of the model was returned even if it had been updated).  All of these have been addressed in this branch.  Please approve and pull so we can deliver the associated stories.