dashboard, bootstrap: Rename CLUSTER_DOMAIN to CONTROLLER_DOMAIN

Signed-off-by: Jesse Stuart <jesse@jessestuart.ca>
dashboard: Remove unused json config

refs 80429e2716f6687bd01cbc7886b6e2e845e927c8

Signed-off-by: Jesse Stuart <jesse@jessestuart.ca>
Merge pull request #599 from flynn/dashboard-env-reword

Dashboard env reword