Create an organization setting for secure: true on uploads #447

If dealing with sensitive information, currently the only way to upload a document so that it isn't run through OpenCalais is through the secure flag via the API.

This could be tricky for a reporter without programming skills. It would be great if an organization could set a default for all uploads to use secure: true.

For feature completeness, you could add an option in the document upload dialog edit options to override this (or perhaps there is already a manual "re-run OpenCalais" button that would satisfy this ability). However, my use case would be satisfied without this override.