Contact Details: "View history" and "View JSON details" are redundant

[KjartanE]

Description of problem

Both buttons in ContactDetailsScreen navigate to the same JSON-blob screen with the same content — only the title differs. "View history" is misleading; there is no real history view.

Expected behavior

Either one user-meaningful action (renamed appropriately), or a proper history view of connection events. Dev-only JSON should be hidden from production users.

Steps to reproduce

1. Open any contact's Details screen.
2. Tap "View history" — see a JSON blob.
3. Tap "View JSON details" — see the same JSON blob.

Screenshots