Create a demo application

[marlonbaeten]

• [x] Trusted time server -> timestamp + sign messages (anycast + ts in non confidential data)
• [x] Right click: show CESR encoding for messages
• [x] Other did besides did:peer?
• [x] Notifications -> in the interface (invites)
• [x] Show contacts if on desktop
• [x] Show relationship table + full VID in contact interface
• [x] Notary function of the timestamp server
• [x] Send over documents
• [x] Show verification status of VID
• [x] Setup test VID server

[marlonbaeten]

See #32