move tasks to separate directory

these are just wrappers that we use to launch as processes

src/tasks/backuptask.js

@@ -0,0 +1,46 @@
+#!/bin/bash
+':' //# comment; exec /usr/bin/env node --max_old_space_size=300 "$0" "$@"
+
+// to understand the above hack read http://sambal.org/2014/02/passing-options-node-shebang-line/
+
+'use strict';
+
+require('supererror')({ splatchError: true });
+
+var assert = require('assert'),
+    backups = require('../backups.js'),
+    database = require('../database.js'),
+    debug = require('debug')('box:backuptask'),
+    paths = require('../paths.js'),
+    safe = require('safetydance');
+
+function initialize(callback) {
+    assert.strictEqual(typeof callback, 'function');
+
+    database.initialize(callback);
+}
+
+// Main process starts here
+const auditSource = JSON.parse(process.argv[2]);
+
+debug('Staring complete backup');
+
+process.on('SIGTERM', function () {
+    process.exit(0);
+});
+
+initialize(function (error) {
+    if (error) throw error;
+
+    safe.fs.writeFileSync(paths.BACKUP_RESULT_FILE, '');
+
+    backups.backupBoxAndApps(auditSource, function (error) {
+        if (error) debug('backup failed.', error);
+
+        safe.fs.writeFileSync(paths.BACKUP_RESULT_FILE, error ? error.message : '');
+
+        // https://nodejs.org/api/process.html are exit codes used by node. apps.js uses the value below
+        // to check apptask crashes
+        process.exit(error ? 50 : 0);
+    });
+});