Merge pull request #178 from atlasapi/preserve-revoked-flag

Preserve 4.0 revoked flag
Ensure a total ordering on ChildRefs

Arguably, duplicate sortKeys is a data problem, but we should protect
ourselves against that by using URI as a fallback in the comparison
of ChildRefs in the event of the sortKey being the same.
Merge pull request #179 from atlasapi/childref-total-ordering

Ensure a total ordering on ChildRefs
Add source restriction to publishers
Merge pull request #161 from atlasapi/mbst-6755-additions-to-publishers

Mbst 6755 additions to publishers
Default ChildRefs to emptyset in BrandTestDataBuilder
Add C5 TV clips publisher
Merge pull request #180 from atlasapi/add-fivetvclips-publisher

Add C5 TV clips publisher
Add YouView apps
Make Location equality check null-safe for transportType
Merge branch 'master' into stage

Conflicts:
	src/main/java/org/atlasapi/media/entity/Publisher.java