- If there's a lot of accounts to calculate balances for, then recurring transactions create page
doesn't load. Partly because it has to calculate a lot of balances, but partly because the cache
isn't being used at all because date is `new Date` rather than say, end of month.
Fix: Change Steam balance calculator to always default cache using end of month. Since cache is
'invalidated' upon any edit, there's no reason to use current datetime anywhere its not explicitly
required by user flow.
Fix: Don't calculate balances for revenue / expense accounts since those are unbounded.
Issue: #3597
