Implement options page

ext/src/manifest.json

@@ -9,6 +9,7 @@
           , "strict_min_version": "57.0"
         }
     }
+
   , "browser_action": {
         "default_popup": "popup/index.html"
     }
@@ -16,17 +17,25 @@
   , "background": {
         "scripts": [ "main.js" ]
     }
+
   , "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
   , "default_locale": "en"
   , "manifest_version": 2
+
+  , "options_ui": {
+        "page": "options/index.html"
+    }
+
   , "permissions": [
         "menus"
       , "nativeMessaging"
+      , "storage"
       , "webNavigation"
       , "webRequest"
       , "webRequestBlocking"
       , "<all_urls>"
     ]
+
   , "web_accessible_resources": [
         "shim/bundle.js"
       , "dm.js"