Develop

Thi pull request fix this error
https://jira.man.poznan.pl/jira/browse/WFE-978

There are two test which haven't passed on my machine.
 ```
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FAIL: testEvaluateWfInputs (TestEvalChecklist.TestEvalChecklist)
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Traceback (most recent call last):
  File "../../iaeval/test/TestEvalChecklist.py", line 453, in testEvaluateWfInputs
    self.assertIn(str(line)[:-1], expect)
AssertionError: 'Incomplete for Runnable of resource .' not found in ['Research Object file:///home/pejot/code/ro-manager/src/iaeval/test/robase/RO_test_minim/:', 'Fully complete for Runnable of resource .', 'Satisfied requirements:', '  Workflow instance or template found', '  All workflow inputs referenced or present', u'Research object URI:     file:///home/pejot/code/ro-manager/src/iaeval/test/robase/RO_test_minim/', u'Minimum information URI: file:///home/pejot/code/ro-manager/src/iaeval/test/robase/RO_test_minim/simple-wf-minim.rdf']

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FAIL: testQueryResultPreBinding (TestRdfReport.TestRdfReport)
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Traceback (most recent call last):
  File "../../roweb/test/TestRdfReport.py", line 189, in testQueryResultPreBinding
    self.assertEqual("Hello Graham", outstr.getvalue())
AssertionError: 'Hello Graham' != u'Hello simple-test-data'

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 ```