WebAccess: temporary exception dump (OPS)

* Dumps important information to a pickled file in /tmp-shared/
  called /tmp/orcid_dictionary_problem_[TIMESTAMP].cPickle
  in case of protocol error.

Reviewed-by: Laura Rueda <laura.rueda@cern.ch>
Acked-by: Jan Aage Lavik <jan.age.lavik@cern.ch>