SLING-2944 :  Replace administrative login by service-based login

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1520522 13f79535-47bb-0310-9956-ffa450edef68
SLING-3044 - ignore .idea folder in git

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1520523 13f79535-47bb-0310-9956-ffa450edef68