Whitelisted overwriting FileSystemStorage
**Description** A filestorage system that + is whitlisted, + changes the file name and targeting directory to put the file in - with respect to (runtime) instance information. + replaces files if they exists with the same name. Kudos to [jedie](http://djangosnippets.org/users/jedie/) - http://djangosnippets.org/snippets/977/
- forms
- filefield
- whitelist
- filestorage
- overwrite
- file-extension