Cardano Updates

## Description
<!--- Describe your changes -->
Missing deprecated flag on `account_updates` endpoint.

## Description
<!--- Describe your changes -->

Rewrites the pool history cache for better performance

## Which issue it fixes?
<!--- Link to issue: Closes #issue-number -->

- Avoid repeated calls to reward across 2 CTEs (leadertotal and membertotal merged to reward_totals)
- Make use of lateral join to avoid repeated call per row
- Use filter instead of subquery
- Move grest.total call to static (avoid calling it 30K times on mainnet)

Also, minor fixes to other cache tables