Typescript migration:

* Refactoring of scheduler and jobs to use promises.
* Add "failed" state for tasks.

server/jobs/FixNodeFilenamesJob.ts

@@ -0,0 +1,22 @@
+import Logger from "../logger";
+import NodeService from "../services/nodeService";
+
+export default {
+    name: 'FixNodeFilenamesJob',
+    description: 'Makes sure node files (holding fastd key, name, etc.) are correctly named.',
+
+    run: (): Promise<void> => {
+        return new Promise<void>(
+            (resolve, reject) => {
+                NodeService.fixNodeFilenames((err: any): void => {
+                    if (err) {
+                        Logger.tag('nodes', 'fix-filenames').error('Error fixing filenames:', err);
+                        return reject(err);
+                    }
+
+                    resolve();
+                });
+            }
+        );
+    }
+}