[FIXED JENKINS-16278] Fixed RememberMe cookie signature generation (bugfix on SECURITY-49)

New cookie signature generation was not implemented in creation of RememberMe cookie, but only in its verification.
Fixed by new override TokenBasedRememberMeServices2.loginSuccess
[FIXED JENKINS-16462] Run parameters do not support folders.
Merge pull request #673 from denebolar/JENKINS-16278

[FIXED JENKINS-16278] Fixed RememberMe cookie signature generation (bugfix on SECURITY-49)
Thanks
changelog entry for JENKINS-16278
Forgotten @since.
Merge branch 'master' of github.com:jenkinsci/jenkins
fromExternalizableId: diagnosis of nonexistent job.
[JENKINS-16468] Linking in changelog.
[JENKINS-16468] Marking as a bug, not an RFE.