Fix import errors

[lassoan]

fixes issues mentioned at #46

[jamesobutler]

@tashrifbillah Could you help with the integration of this PR? Thanks!

[tashrifbillah]

Hi all, I am surprised that the PR notification did not make it to my primary inbox. Rest assured, I shall review it shortly.

[tashrifbillah]

The changes look good to me. If we merge it today, should we be able to see updates in https://slicer.cdash.org/index.php?project=SlicerPreview tomorrow?

I see the tests are failing across all three of Linux, MAC, and WIN. However, the builds are already successful.

[lassoan]

The changes look good to me. If we merge it today, should we be able to see updates in https://slicer.cdash.org/index.php?project=SlicerPreview tomorrow?

Yes, if you merge it before 10pm today then you'll see the new results on the dashboard tomorrow morning.

[tashrifbillah]

Hi Andras, the build looks okay but we still have one and the most important test failing:

Traceback (most recent call last):
  File "/work/Preview/S-0-E-b/DiffusionQC/Test/run_test.py", line 7, in <module>
    from plumbum import local
ModuleNotFoundError: No module named 'plumbum'

The build log confirms that plumbum package was installed but the testing script cannot find it. How should we change the testing infrastructure then:

https://github.com/pnlbwh/SlicerDiffusionQC/blob/master/Test/CMakeLists.txt

and

SlicerDiffusionQC/Test/run_test.py

Line 7 in cc78514

from plumbum import local