In order to make the "save before publish" operation a little more

streamlined, I'm rearranging things so that it can be somewhat less

event driven. Right now, this involves:

ReviewRequestEditorView calls finishSave for each open field.
The field calls InlineEditorView.submit.
InlineEditorView.save triggers the "complete" event.
"complete" is handled by  the field view, which calls

ReviewRequestEditor.setDraftField
ReviewRequestEditor.setDraftField calls ReviewRequestDraft.save

   with the new data.
As each of the fields are saved, ReviewRequestEditor is keeping

   track via a pendingSaveCount attribute, which will trigger a new

   call to publishDraft once the count is zero.

This is all unnecessarily complex, and involves making an API call per

field before we can publish, when we should be able to save all of the

data in a single go.
This change is the first step in addressing this, allowing the inline

editor to save/submit without triggering that "complete" event, and

returning the new value instead.

Ran js-tests.