New OCS route:
 /ocs/cloud/user
Response:
 <?xml version="1.0"?>
 <ocs>
  <meta>
   <status>ok</status>
   <statuscode>100</statuscode>
   <message/>
  </meta>
  <data>
   <id>thomas</id>
   <display-name>DeepDiver</display-name>
   <email>no-response@domain.tld</email>
  </data>
 </ocs>
Merge pull request #5452 from owncloud/fixing-4548-master

OCS API to get current user information