Add organisations and logic for 3di models.
Show all models for superusers. Make proper copyright year tag. Add organisation to model reference when processing model upload instance.
Add organisation uuid, ssh url and slug to api models url.
Add management command for creating upload directories.
Fix get_organisation_choices for non super users.
Fix help text.
Add organisation to Model Upload when processing ftp uploads.
Make description empty when process ftp model uploads.
Update CHANGES.rst.
Fix comment.
Add check for modified time before processing uploaded zip files.
Fix import order.
Merge pull request #3 from nens/sander-add-organisation

Sander add organisations