Merge pull request #89 from matejonnet/master

Demo stg2 fixes
Merge pull request #90 from matejonnet/master

Use concurrent hash set for running builds.
Merge pull request #91 from matejonnet/master

Revert to use hardcoded build status.
Stage 2 Demo Candidate #1
Bugfix to set correct API URL in demo environment
Merge pull request #92 from alexcreasy/demo2

Demo2
Use configuration id for task id.