apps: add crontab

crontab is a text field, so we can have comments

part of #793

src/scheduler.js

@@ -112,7 +112,7 @@ async function sync() {
 
     const allApps = await apps.list();
 
-    const allAppIds = allApps.map(function (app) { return app.id; });
+    const allAppIds = allApps.map(app => app.id);
     const removedAppIds = _.difference(Object.keys(gState), allAppIds);
     if (removedAppIds.length !== 0) debug(`sync: stopping jobs of removed apps ${JSON.stringify(removedAppIds)}`);
 
@@ -126,7 +126,7 @@ async function sync() {
 
     for (const app of allApps) {
         const appState = gState[app.id] || null;
-        const schedulerConfig = app.manifest.addons ? app.manifest.addons.scheduler : null;
+        const schedulerConfig = apps.getSchedulerConfig(app);
 
         if (!appState && !schedulerConfig) continue; // nothing to do
         if (appState && appState.cronJobs) { // we had created jobs for this app previously