Raise normal init. limit to 15 secs for now

src/js/webrequest.js

@@ -1150,7 +1150,7 @@ function dispatcher(request, sender, sendResponse) {
   // process is not running; the getPopupData message from the popup causes
   // the background to start but the background is not yet ready to respond
   if (!badger.INITIALIZED) {
-    if ((Date.now() - badger.startTime) > 10000) {
+    if ((Date.now() - badger.startTime) > 15000) {
       // too much time elapsed for this to be a normal initialization,
       // give up to avoid an infinite loop
       badger.criticalError = "Privacy Badger failed to initialize";