new nbconvert tests which use accents in arguments
missing files
solved pdf postprocess issue for nb with accented names
removed unused import
updated hack for pdf postprocess. Now it is only used for windows platforms and python 2.x
Removed Sphinxtransformer test
removed sehll=True
Merge pull request #4732 from marcmolla/master

Accents in notebook names and in command-line (nbconvert)