Add support for aggregating downstream test results via DSL
Fix indentation
wrap body of if in curlies
Merge remote-tracking branch 'sgtcoolguy/aggregate_downstream_tests'

Conflicts:
	job-dsl-core/src/main/groovy/javaposse/jobdsl/dsl/helpers/publisher/PublisherContextHelper.groovy
	job-dsl-core/src/test/groovy/javaposse/jobdsl/dsl/helpers/publisher/PublisherHelperSpec.groovy
removed unnecessary qualified references