Refactor API Schema and validation

- /schema now returns full openapi/swagger schema
- That schema is used to validate incoming requests
- And used as a contract in future integration tests
- Moved route files up one level
- Fixed incorrect 404 reponses when getting objects
- Fixed saving new objects and passing jsonschemavalidation

backend/routes/reports.js

@@ -0,0 +1,29 @@
+const express        = require('express');
+const jwtdecode      = require('../lib/express/jwt-decode');
+const internalReport = require('../internal/report');
+
+let router = express.Router({
+	caseSensitive: true,
+	strict:        true,
+	mergeParams:   true
+});
+
+router
+	.route('/hosts')
+	.options((_, res) => {
+		res.sendStatus(204);
+	})
+
+	/**
+	 * GET /reports/hosts
+	 */
+	.get(jwtdecode(), (_, res, next) => {
+		internalReport.getHostsReport(res.locals.access)
+			.then((data) => {
+				res.status(200)
+					.send(data);
+			})
+			.catch(next);
+	});
+
+module.exports = router;