f168efb69c
* Replace _readFile with _fetchAsset for consistency with Backend * Fix error messages * Make OptionsUtil non-static * Update how default options are assigned * Add createValidatingProxy * Add validate, update _onApiSetAllSettings * Remove unused api.optionsSchemaGet * Remove Backend._optionsSchema * Update OptionsUtil to create its own JsonSchemaValidator * Rename Backend._optionsSchemaValidator * Make getDefault non-async