Make SnapFile saving possible for administrators

[jhenkens]

This is so that Ricky can being to work directly with our system.

This might require fixing rolify

[jhenkens]

I just completed 'feature parity' at the cloud-file level with the original SnapCloud. The only differences between the two revolve around the fact that the original SnapCloud is indexed by [username, filename], whereas octopi gives every file a unique ID and performs indexing based on that. Thus you can have multiple files with the same name, but different ID's.

Next steps would be putting the site online on heroku and creating admin accounts for them.

Additionally, sharing of public files is currently not possible through the interface (SnapCloud does it with pure html links, which I haven't added yet). The permissions are such that, if you had the link to a public file you could view the JSON, but it wouldn't do you any good yet as there is no easy way to load that into laplaya).

Lastly, we should make an interface to allow collaboration on files (multiple owners). This can already be done simply by allowing multiple owners on a file (although, this is dangerous as there is no versioning, and no notifications for collaborating editing, so changes could get blasted away).