Complete Salesforce Settings Migration

[kflemin]

Finishes migrating the Salesforce integration settings from the original AngularJS front-end, fixing several bugs and
adding missing functionality.

Bug Fixes

• Toggle visibility — Disabling the "Salesforce Integration" toggle now hides all config sections below it (matching
  original AngularJS ng-if behavior). Controls are also properly disabled on initial load.
• Data Administrator Name Column — was bound to data_admin_account_name_column (duplicate); corrected to
  data_admin_name_column.
• Data Administrator Contact Field — was bound to default_data_admin_account_name (duplicate); corrected to
  data_admin_contact_fieldname.
• SalesforceMapping.column type — was typed as literal 10; corrected to number.
• SalesforceService — removed leftover console.log; replaced generic "Error fetching organization" messages with
  context-specific error strings.

New Features

• Benchmark Configuration section — 5 form fields that existed in the TypeScript FormGroup but were never rendered:
  Unique Benchmark ID Fieldname, SEED Unique Benchmark ID Column, Cycle Name Benchmark Field, Status Label Benchmark Field,
  All Labels Benchmark Field.
• Test Connection feedback — inline success/error panel displayed after testing the Salesforce connection.

UI Improvements

• Hour and Minute schedule fields stacked vertically so hint text isn't truncated.