Custom FileField with content type and size validation
Usage described in this blog post: [Django: FileField with ContentType and File Size Validation](http://nemesisdesign.net/blog/coding/django-filefield-content-type-size-validation/) Snippet inspired by: [Validate by file content type and size](http://djangosnippets.org/snippets/1303/)
- forms
- validation
- upload
- filefield
- file
- content-type
- max_upload_size