Add logout logic
Merge pull request #5777 from liggitt/12_logout_link

Merged by openshift-bot
LOGOUT_LINK example
node.conf: comments for external port range
Merge pull request #5780 from sosiouxme/enable-xpaas

Merged by openshift-bot
Merge pull request #5779 from liggitt/logout_link_example

Merged by openshift-bot