Reduce number of tries when tests time out.

lib/tasks/qunit.rake

@@ -55,7 +55,7 @@ task "qunit:test" => :environment do
       exit if ENV['RETRY'].present? && ENV['RETRY'] == 'false'
       sleep 2
       tries += 1
-      retry unless tries == 10
+      retry unless tries == 3
     end
 
     # A bit of a hack until we can figure this out on Travis