hdfview

Merge pull request #11 in ~JHENDERSON/hdfview from HDFVIEW/hdfview:hdfview-3 to feature/AttributeNatTable

* commit '64c1d20b525ac99e86e4701417518d56509ead43':
  HDFVIEW-165 Add CutCopyPaste tests
  HDFVIEW-165 Update messageDialogs and checks
  Update and standardize message dialogs
  Add dataset check
  Add new test file for cut, copy, paste
  HDFVIEW-165 Update links test
  Update softlinks to nonexist target