title: Good auth plugin recommendation for grails 2.5.1?
body: <p>I am using Grails 2.5.1 and trying to use Authentication Plugin 2.0.1.  </p>
  
  <p>However, I have an error due to ConfigurationHolder not being found (this happens INSIDE authentication 2.0.1).</p>
  
  <p>It seems that authentication 2.0.1 does not work with Grails 2.5.1 - it is not compatible with how grails structure changed in 2.4.x version.</p>
  
  <p>What good authentication plugin version could I use? Or... How could I fix it? Or... what good authentication plugin alternative could I use?</p>