title: SonarQube and LDAP - Case sensitive logins
body: <p>I am checking SonarQube 5.4 and the latest LDAP plugin 1.5.1. There are however a couple of issues.</p>
  
  <p>First. My AD account is majcicam. If I log in with it, it is correctly shown in the users list. However if I login with MajcicaM (note capital letters) another additional user is added to the list:</p>
  
  <p><a href="https://i.stack.imgur.com/YByXz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YByXz.png" alt="enter image description here"></a></p>
  
  <p>As you can see from the attached image. For every login that I do make, seems it is treated as case sensitive and thinks of it as a different user.</p>
  
  <p>Second thing. Once I assign a group to my user, on the next login those settings are gone. Seems that they are not persisted.</p>
  
  <p>Am I doing something wrong? Is this a bug? Are my settings messed up?</p>
  
  <p>Thanks</p>
  
  <p>Mario</p>