Fix directory traversal vulnerability on LocalUploadBackend
Add support to remove all possible drop areas
fire a `file_uploaded` signal on successful uploads
Fixed Markdown syntax
added string representation of GridFS File ObjectId to the extra_content of the mongo backend
Merge pull request #55 from dannybrowne86/master

ObjectId in mongo backend extra_content
Moves easy_thumbnails -> easy thumbnails.
Checks for AWS_KEYS before trying to use them.
Merge branch 'master' of github.com:GoodCloud/django-ajax-uploader
Upload_dir and s3 fixes.
Implements callable upload dir, defaults to django for default_storage
Doc improvements
Merge pull request #32 from hschmitt/master

Directory traversal vulnerability Fix
Merge pull request #38 from minddust/master

Add support to remove all possible drop areas
Adds credits to readme.
Merges in PR 41- file uploaded signals.
allow date time formatting placeholders in upload dir.
fixed missing import
Merge pull request #57 from fcurella/patch-4

fixed missing import
Merge pull request #56 from fcurella/patch-3

allow date time formatting placeholders in upload dir.