downgrade bluocean to 1.3.5
downgrade bluocean to 1.3.5

After reports of pipeline branch view switching being broken.  See:

    https://issues.jenkins-ci.org/browse/JENKINS-49272

jhoblitt/sandbox-jenkins-demo,lsst-sqre/sandbox-jenkins-demo,jhoblitt/sandbox-jenkins-demo,lsst-sqre/sandbox-jenkins-demo