Export now saves to server.  If save to server fails,
then it saves to file.  Issues:
1. Status bit is not set in java code.
2. If I have previously exported the solution in
  a session, then there is a java error saying that the
  document tree already exists.  Need to destroy the document
  tree after export.
3. I have only tested this on my local maching (OS X) so
   I haven't verified this on the devel server.