Get CSV grain integration production-ready

[blueridger]

Description

This PR makes sure the CSV grain integration is ready for use. There were some minor features missing as well as some bugs that got introduced by recent changes.

• removes the balance column from the UI when ledger accounting is disabled
• do not write grain integration results to disk when -s flag is used
• fixes config update writing bug
• fixes credGrainview related bug

Test Plan

currencyDetails.json:

{
  "currencyName": "USDC",
  "currencySuffix": " USDC",
  "integrationCurrency": {
    "type": "EVM",
    "chainId": "1",
    "tokenAddress": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
  }
}

grain.json:

{
  "allocationPolicies": [
    {
      "budget": "100.1234",
      "numIntervalsLookback": 8,
      "policyType": "IMMEDIATE"
    }
  ],
  "maxSimultaneousDistributions": 1,
  "integration": { "type": "csv" },
  "accountingEnabled": false
}

1. checkout a production instance
2. regression testing: scdev grain -f -s && scdev serve
3. make the config changes above
4. scdev serve
5. identities > select identity > add payout address and save
6. scdev credequate or scdev credrank, depending on what instance you are using
7. scdev grain -f
8. verify only the person with a payout address gets grain
9. verify the csv file in ./output/grainintegration