Filter CHANNEL_GROUP_SUMMARY by enabled sources
Merge pull request #553 from atlasapi/filter-channel-summary-by-enabled-publishers

Filter CHANNEL_GROUP_SUMMARY by enabled sources
Changes resulting from the granular uploads refactor. Mostly adding extra params and methods to the content feeds
controller to allow fine-grained access to individual elements, and adding new fields to tasks.
Tweak version crid param on content feed controller, to be consistent with others
Fix compilation error in simple schedule writer resulting from rebase.
Merge branch 'mbst-9893-more-granular-uploads' into stage

Conflicts:
	src/main/java/org/atlasapi/query/QueryWebModule.java