* Added a flag to allow access of hidden files
The flag '--allow-hidden' will allow Tornado to access hidden files
such as '.images/my_img.jpg'
* Fixed jupyterlab not following allow-hidden
Jupyterlab stores its options in a different location than the
standard notebook. Added the ability to check there as well.
* Updated implementation for any app
Previously I was accessing the settings dict based on the name of
the app that was being used. ex 'NotebookApp', or 'LabApp'.
Now the setting is passed directly into the Tornado settings, and
can be accessed via a more general method.
* Added/fixed unit tests for test_hidden_files
Fixed broken unit tests by setting the default to allow_hidden=False
then added unit test in FilesTest:test_hidden_files that checks for
the accessibility of files with allow_hidden=True
* allow-hidden now works everywhere
Previously allow-hidden flag only allowed hidden files to be accessed via
tornado. Now you can use the allow-hidden flag to access hidden directories and
files via the filebrowser.
* Remove --allow-hidden alias
* Move allow_hidden option onto ContentsManager
* Use try/finally to ensure allow_hidden option is set back to False after test
* Allow access to hidden files, but don't list them for now
* Simplify hidden check for listing again
* Fix indentation
Daniel Farrell
Min RK
Grant Nestor