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/text-table/example/table.js

@@ -0,0 +1,6 @@
+var table = require('../');
+var t = table([
+    [ 'master', '0123456789abcdef' ],
+    [ 'staging', 'fedcba9876543210' ]
+]);
+console.log(t);