Error in history item selection

[morj-uio]

When selecting history item in proto test tool 3:

Traceback (most recent call last):
  File "/opt/conda/envs/proto2/lib/python3.7/site-packages/flask_mako.py", line 228, in _render
    rv = template.render(**context)
  File "/opt/conda/envs/proto2/lib/python3.7/site-packages/mako/template.py", line 473, in render
    return runtime._render(self, self.callable_, args, data)
  File "/opt/conda/envs/proto2/lib/python3.7/site-packages/mako/runtime.py", line 883, in _render
    **_kwargs_for_callable(callable_, data)
  File "/opt/conda/envs/proto2/lib/python3.7/site-packages/mako/runtime.py", line 920, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/opt/conda/envs/proto2/lib/python3.7/site-packages/mako/runtime.py", line 947, in _exec_template
    callable_(context, *args, **kwargs)
  File "root_base_mako", line 51, in render_body
  File "base_mako", line 51, in render_body
  File "generictool_mako", line 85, in render_body
  File "/opt/proto/lib/proto/tools/guitest/ProtoGuiTestTool3.py", line 501, in getOutputName
    historyName = extractNameFromDatasetInfo(choices.history)
  File "/opt/proto/lib/proto/CommonFunctions.py", line 187, in extractNameFromDatasetInfo
    return unquote(str(datasetInfo[-1])).decode('utf-8')
AttributeError: 'str' object has no attribute 'decode'

The history API does not provide dataset filenames, here one must call the datasets API for each item.