allows env variable to control bg worker flag

app.json

@@ -53,6 +53,10 @@
     "CANVAS_NAV_ITEM_NAME" : {
       "description": "The text displayed in the canvas navigation menu to launch this app",
       "value": "UDOIT"
+    },
+    "WORKER_ENABLED": {
+      "description": "Enable the background worker (requires you turn on the worker dyno).",
+      "value": "true"
     }
   },
   "addons": [

config/herokuConfig.php

@@ -29,7 +29,7 @@
 $dsn = "pgsql:host={$db_host};dbname={$db_name};user={$db_user};port={$db_port};sslmode=require;password={$db_password}";
 
 /* Background worker Options */
-$background_worker_enabled = true;
+$background_worker_enabled = (getenv("WORKER_ENABLED")) ?: true;
 $background_worker_sleep_seconds = 7;
 
 /* Disable headings check character count */

config/localConfig.template.php

@@ -17,7 +17,7 @@
 $unscannable_suggestion_on = true;
 
 /* Tool name for display in Canvas Navigation */
-$canvas_nav_item_name = getenv('CANVAS_NAV_ITEM_NAME');
+$canvas_nav_item_name = (getenv('CANVAS_NAV_ITEM_NAME')) ?: 'UDOIT';
 
 /* Google/YouTube Data Api Key */
 define('GOOGLE_API_KEY', '');
@@ -40,7 +40,7 @@
 
 // added in v2.3.0
 // Background worker Options (See Background Workers in Readme)
-$background_worker_enabled = false;
+$background_worker_enabled = (getenv("WORKER_ENABLED")) ?: false;
 $background_job_expire_time = 20; // after x Minutes, mark job as expired
 $background_worker_sleep_seconds = 7;