Cleaning up TODOs that were noted down during the major update.
Further cleaning up of 'TODOs' in the codebase.
Fixing a few more TODOs.
Added the global viewGet/Set dictionarys to mrvCleanWorkspace. Defaulting Num Slices in niftiGet to using dim(sliceDim) if does not have SliceEnd and SliceStart in the nifti.
Merge pull request #52 from vistalab/todoFixes

Fixing some TODOs that needed to be cleaned up