skip *~ files in import of extra content (e.g. info and about pages)
skip ~ files in static content import
Add test for ignoring tilde files on import of extra content
Add test for ignoring tilde static files on import
Add README to tilde fixture, fix pylint/pep8 issues
Merge pull request #2413 from edx/bugfix/ichuang/do-not-import-tilde-files

Skip tilde files when importing