Bring test UI up to snuff with latest features

[coltfred]

This is a ticket that we should keep updating with things that haven't made it into the test UI.

• Sharing with a group you are not in
  Add an arbitrary text box on document share to let users manually enter group IDs
• Creating document without encrypting to current user
  Add a checkbox on document create that lets the user opt out of sharing with themselves on create.