dev-api: add developer portal, OpenAPI spec, and Flatenbadet case study

- New /developers/ page with API docs, SDKs, pricing, use cases
- OpenAPI 3.0 spec for Orders, Missions, Photos, Analytics
- Case study: Glasskiosken i Flatenbadet — complete ROI analysis
- Updated /order/ with recurring missions and frequency dropdown

services/frilans-payout/node_modules/events/tests/errors.js

@@ -0,0 +1,13 @@
+'use strict';
+var assert = require('assert');
+var EventEmitter = require('../');
+
+var EE = new EventEmitter();
+
+assert.throws(function () {
+  EE.emit('error', 'Accepts a string');
+}, 'Error: Unhandled error. (Accepts a string)');
+
+assert.throws(function () {
+  EE.emit('error', { message: 'Error!' });
+}, 'Unhandled error. ([object Object])');