Add cluster size constraint to template UI #425
use min/max constraint when creating cluster
default clusterNumMachines to the constraint minimum
renaming classes with Loom in the name.
Merge pull request #465 from continuuity/feature/ui-template-cluster-size

Add cluster size constraint to template UI
default the user if the field is empty as well.
adding parantheses.
Merge pull request #470 from continuuity/feature/check-empty-user

default the user if the field is empty as well.
Merge pull request #471 from continuuity/feature/rename-classes

renaming classes with Loom in the name.
Merge branch 'develop' into feature/docs-0.9.8-reorg