Bug 750568 - Cannot use twitter or google accounts within the desktop runtime - Needs to be whitelisted on origins allowed [r=myk, a=js-only]

Also allow plain https twitter.com

webapprt/ContentPolicy.js

@@ -16,6 +16,7 @@ const allowedOrigins = [
   "https://www.facebook.com",
   "https://accounts.google.com",
   "https://www.google.com",
+  "https://twitter.com",
   "https://api.twitter.com",
 ];