add overlays, fix refresh bug for bootstrap
BDD tests passing after delayed job threading
really fix the bootstrap button
Merge pull request #736 from cloudedge/pull-req-master-d8017cb3e43d33b986fe906b749188bff709ba7d

https://github.com/crowbar/barclamp-crowbar/pull/736

Merged by devtool for VictorLowther