Add document create option to not encrypt document to author

[ernieturner]

Add a new boolean flag (default true) on document.create which controls whether the author of the document will have the document be encrypted to them. The document.create call must share with at least one user/group, so if this option is false, the grantList must have at least one entry.

Also need to consume changes to how the document list, document get response structures can change if the author is requesting a document that they cannot decrypt.