fixed methods resolve_base_currency, resolve_price
fixed methods resolve_base_currency, resolve_price

- updated method: gen_settings (entities)
  - populate entity-specific base currency if found in config
- updated method: resolve_base_currency
  - fix base currency resolution to pry class attributes vs. nonexistent
    hash table
  - rm pointless error message that never raised
- updated method: resolve_price
  - use caution when prying for asset prices
  - fix entity-specific price lookups
    - stopped conditional from short-circuiting early, which was whenever
      $entity_name was passed to the method

atweiden/nightscape