User flows

• User has access to Wall - return data
• User has read and write access to repo - can view and move stickies
• User has read access only to repo - cannot move stickies
• Viewing repo that does not exist - 404
• Viewing private repo but does not have access - 404
• Viewing private repo with invalid Auth - 401
• Viewing private repo but organisation has not been paid or plan limited has reached - 402
• Database errors or PayPal errors - 500