Make Sim smarter about position history

[gjvoosten]

The Simulator is now smarter about history of positions.

Closes AB#1207

User changes

• None

Superuser changes

• None

Admin changes

• None

System admin changes

• [ ] application.yml or anet-dictionary.yml needs change
• [ ] db needs migration
• [ ] documentation has changed
• [ ] graphql schema has changed

Checklist

• [x] described the user behavior in PR body
• [x] referenced/updated all related issues
• [x] commits follow a repo#issue: Title title format and these 7 rules
• [x] commits have a clean history, otherwise PR may be squash-merged
• [ ] added and/or updated unit tests
• [ ] added and/or updated e2e tests
• [ ] added and/or updated data migrations
• [ ] updated documentation
• [x] resolved all build errors and warnings
• [ ] opened debt issues for anything not resolved here