[Project] Share a populated graph with another person

[kmcginnes]

Many users would like to share a populate graph with other users.

Goals

• Encrypt data in URL to prevent accidental sensitive data leakage
• Disable & hide share functionality if encryption key is not set

Related Issues

• Prerequisite #587
• Original request #298
• Consider #64

Tasks

• [ ] [Task] Add function to create URL with current graph
• [ ] [Task] Add server function to encrypt payload
• [ ] [Task] Add environment value for encryption private key
• [ ] [Task] Compress payload to encrypt before encryption
• [ ] [Task] Add server function to decrypt payload
• [ ] [Task] Add share button to UI