title: Custom URL parameters lost after OpenAM login redirection
body: <p>I'm using OpenAM for authentication on my application. I access to my app using such URL:</p>
  
  <pre><code>http://my.company.com/appfolder/appservlet?lang=EN&amp;user=test
  </code></pre>
  
  <p>On first access, OpenAM agent catches the URL and redirect my browser to the authentication page using this redirection URL:</p>
  
  <pre><code>...openam/UI/Login?goto=http%3A%2F%2Fmy.company.com%3A8080%2Fappfolder
  </code></pre>
  
  <p>After correct authentication, I'm finally redirected to the following URL:</p>
  
  <pre><code>http://my.company.com/appfolder
  </code></pre>
  
  <p>This is logic since this is the URL referenced in goto param. But it's not the same than original one: the servlet and custom params (lang and user) are missing.</p>
  
  <p>Any idea how to configure my agent to make it keep servlet and params after redirection ?</p>