Merge pull request #579 from patriot1burke/master

remote token validation
Merge pull request #580 from patriot1burke/master

add HttpServletRequest.authenticate() test
Merge pull request #581 from patriot1burke/master

remove AuthenticationProvider/Link
Merge pull request #582 from patriot1burke/master

fed example
Merge pull request #583 from patriot1burke/master

delete auth prov example
Merge pull request #584 from patriot1burke/master

fix fed example
Upgrade to latest picketlink. Fix LDAP configuration according to that
Update mongo entities
Merge pull request #585 from mposolda/master

Upgrade to latest picketlink. Fix LDAP configuration according to that
federation docs