converge transition to use single annealer call and update UI to run it

converge transition to use single annealer call and update UI to run it
Merge pull request #646 from cloudedge/pull-req-master-8c8400d1e1f431f7c8261eafa4cca36921778510

https://github.com/crowbar/barclamp-crowbar/pull/646

Merged by devtool for VictorLowther
Minor grammar changes.
resolve merge