Collection resources returned by the ``search`` and ``index`` actions are now returned without their forms (use the ``show`` action to get the forms of a given collection); some work on the corpus resource/model.
The models of form, collection and phonology resources have all been updated to include a modifier attribute.  The backuper attribute has been removed from the first two.  Now the backup procedure simply involves copying the original modifier and datetimeModified values from the object to be backed up.