Follow-up from "Cleanup submission helper imports"

The following discussion from !398 (merged) should be addressed:

• @kolehman started a discussion: (+1 comment)

  @cburgard: This line causes a crash, because the import ROOT was removed in the beginning of the file. Of course, I could add a import ROOT at this stage, but I'm not sure if this is what you had intended?

  For completeness, the traceback and error

  Traceback (most recent call last):
    File "/home/kolehman/HWW/HWWAnalysis/HWWAnalysisCode/share/visualize.py", line 81, in <module>
      config = common.getConfigOptions(parser.parse_args())
    File "/home/kolehman/HWW/HWWAnalysis/build/x86_64-centos6-gcc62-opt/python/CommonAnalysisHelpers/common.py", line 154, in getConfigOptions
      readConfigOptionsRecursively(configFiles, readconfig, section)
    File "/home/kolehman/HWW/HWWAnalysis/build/x86_64-centos6-gcc62-opt/python/CommonAnalysisHelpers/common.py", line 89, in readConfigOptionsRecursively
      if isinstance(configObject, (list,ROOT.vector('string'),ROOT.vector('TString'))):
  NameError: global name 'ROOT' is not defined