Adding ability to sync a cluster's template to the current version
of the template.
Adding ability to sync a cluster's template to the current version
of the template.
Documenting sync ability.
Merge branch 'feature/sync-cluster-to-current-template' of github.com:continuuity/loom into feature/sync-cluster-to-current-template
Merge remote-tracking branch 'origin/develop' into feature/sync-cluster-to-current-template

Conflicts:
	server/src/main/java/com/continuuity/loom/scheduler/task/ClusterService.java
added changelog entry.
add more details in docs on why one might sync a template.
Merge remote-tracking branch 'origin/develop' into feature/sync-cluster-to-current-template

Conflicts:
	CHANGELOG.md
Merge pull request #214 from continuuity/feature/sync-cluster-to-current-template

Feature/sync cluster to current template