FIX: Always allow downloads from CDN

lib/file_helper.rb

@@ -11,13 +11,14 @@ class FileHelper
     url = "https:" + url if url.start_with?("//")
     raise Discourse::InvalidParameters.new(:url) unless url =~ /^https?:\/\//
 
-    # uri = FinalDestination.new(url).resolve
-    uri = URI.parse(url)
+    uri = FinalDestination.new(url, max_redirects: follow_redirect ? 5 : 1).resolve
+    return unless uri.present?
+
     extension = File.extname(uri.path)
     tmp = Tempfile.new([tmp_file_name, extension])
 
     File.open(tmp.path, "wb") do |f|
-      downloaded = uri.open("rb", read_timeout: read_timeout, redirect: follow_redirect, allow_redirections: :all)
+      downloaded = uri.open("rb", read_timeout: read_timeout)
       while f.size <= max_file_size && data = downloaded.read(512.kilobytes)
         f.write(data)
       end