Issue 3205 - update ABB appstore redirection link

modules/web/templates/adblockplus.org.conf.erb

 # XSS and clickjacking prevention headers
 
 set $csp_frame "";
 if ($uri ~ ^/(:?\w\w(_\w\w)?/)?(?:index|firefox|chrome|opera|android|internet-explorer|safari|yandex-browser|maxthon)?$)
 {
   set $csp_frame "; frame-src www.youtube-nocookie.com;";
 }
 add_header Content-Security-Policy "default-src 'self'; img-src * data:; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline' 'unsafe-eval' $csp_frame";
 add_header X-Frame-Options "sameorigin";
 
@@ skipping 119 matching lines @@
   if ($arg_link = "adblock_browser_ios_support")
   {
     rewrite ^ https://adblockbrowser.org/en/ios-support/? redirect;
   }
   if ($arg_link = "adblock_browser_android_store")
   {
     rewrite ^ https://play.google.com/store/apps/details?id=org.adblockplus.browser? redirect;
   }
   if ($arg_link = "adblock_browser_ios_store")
   {
-    rewrite ^ https://itunes.apple.com/us/app/adblock-browser/id1015653330?ls=1&mt=8? redirect;
+    rewrite ^ https://geo.itunes.apple.com/us/app/adblock-browser-best-ad-blocker/id1015653330?mt=8? redirect;

[mathias, 2015/10/15 09:37:34]

What about using https://geo.itunes.apple.com/app/id1028871868 (aligned with
Simona's suggestion) instead? Wouldn't that avoid such issue in the future?

[saroyanm, 2015/10/15 09:47:03]

To use that link will need proper testing, please note the link suggested by
Simona is redirecting to
https://itunes.apple.com/de/app/adblock-plus-abp/id1028871868?mt=8&ign-mpt=uo...


While the one indexed by google and created by Apple's link maker is: 
https://itunes.apple.com/de/app/adblock-browser-best-ad-blocker/id1015653330?...

Please also see -> http://linkmaker.itunes.apple.com/en-us/details/1015653330 
If link suggested by Simona is reliable enough we can go with it, but for now
I'll suggest to go with official one.

   }
   if ($arg_link = "adblock_browser_android_download")
   {
     rewrite ^ https://downloads.adblockplus.org/adblockbrowser-1.0.0-arm.apk? redirect;
   }
   if ($arg_link = "adblock_plus_safari_ios_support")
   {
     rewrite ^ /forum/viewforum.php?f=26? redirect;
   }
   if ($arg_link = "adblock_plus_safari_ios_store")
@@ skipping 136 matching lines @@
 location /403.html
 {
   try_files $uri @proxied;
 }
 location @proxied
 {
   proxy_pass https://server16.adblockplus.org;
   proxy_set_header Host adblockplus.org;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 }