* Refactor api_check to use render_error_page so that api limit errors get logged to New Relic for analysis. * Also standardize json error responses to return the error message in `message` instead of `reason`.
* Refactor api_check to use render_error_page so that api limit errors get logged to New Relic for analysis. * Also standardize json error responses to return the error message in `message` instead of `reason`.