Fix ET Prime

Update of function isSiteEnabled because no match with https://prime.economictimes.indiatimes.com (without dot-prefix).
Dot was added to prevent site.com to match with prefixsite.com.
Result: Googlebot wasn't set as user-agent.

background.js

@@ -446,7 +446,7 @@ browser.webRequest.onCompleted.addListener(function(details) {
 
 function isSiteEnabled(details) {
   var isEnabled = enabledSites.some(function(enabledSite) {
-    var useSite = details.url.indexOf("." + enabledSite) !== -1;
+    var useSite = (details.url.indexOf("." + enabledSite) !== -1 || details.url.indexOf("/" + enabledSite) !== -1);
     if (enabledSite in restrictions) {
       return useSite && details.url.indexOf(restrictions[enabledSite]) !== -1;
     }