[BUGFIX] Fix re-submission of file uploads
When using the ``<f:form.upload />`` ViewHelper to upload a file
previously uploaded resources are re-displayed via hidden fields so that
they don't have to be transmitted again.
With the new Resource Management (FLOW-108) these hidden fields have
been renamed from ``submittedFile`` to ``originallySubmittedResource``
But the ``ResourceTypeConverter`` was not adjusted accordingly.
Releases: master, 3.0