add logger

manifest.json

@@ -18,6 +18,7 @@
     "scripts": [
       "scripts/shared/tools.js",
       "scripts/shared/common.js",
+      "scripts/background/logger.js",
       "scripts/background/messaging.js",
       "scripts/background/result.js",
       "scripts/background/signiture.js",
@@ -38,6 +39,7 @@
     "run_at": "document_idle"
   }],
   "permissions": [
-    "activeTab"
+    "activeTab",
+    "notifications"
   ]
 }