New UI release (Slayer Scythe, TARDIS)

• Respond with 404 instead of 200 + error-in-JSON for the deprecated v1 APIs
• Minor enhancements to anchors and ambassadors
• Changes for decommissioned anchor list and various changes to the decommissioning procedure
• Fix a bug where country of the probe did not reflect its geo-coordinates
• Fix an issue where timetravel was not working when trying to parse 7000 range built-ins (connection and uptime events)