Fix corner case in zim newfs

[mexicarne]

Hello, there is some code missing in zim/newfs/__init__.py. It is triggered when user have locale not set. There is no logger object created, so it will fail with

No handlers could be found for logger "zim.fs"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "setup.py", line 25, in <module>
    import makeman # helper script
  File "makeman.py", line 14, in <module>
    from zim.main import HelpCommand
  File "zim/main/__init__.py", line 28, in <module>
    from zim.notebook import Notebook, Path, \
  File "zim/notebook/__init__.py", line 39, in <module>
    from .info import NotebookInfo, NotebookInfoList, \
  File "zim/notebook/info.py", line 19, in <module>
    from .notebook import NotebookConfig, _resolve_relative_config
  File "zim/notebook/notebook.py", line 22, in <module>
    from zim.newfs import LocalFolder
  File "zim/newfs/__init__.py", line 19, in <module>
    logger.warn('Filesystem encoding is set to ASCII or Latin1, using UTF-8 instead')
NameError: name 'logger' is not defined

Here is the patch we applied locally:

Also this is the only file with windows-style line endings. Would you please fix it too to make it consistent with overall code? Thank you.

[jaap-karssenberg]

Will be fixes in c951d49