Add ID to embedded asset objects (API v3 only)
Bump to api 3.0.0.beta6
Add version and status headers to all API responses
Move API headers into nested 'meta' object
Consolidate meta information into single file
Merge remote-tracking branch 'origin/master' into api-v3-sorting

Conflicts:
	app/views/api/public/v3/shared/_version.json.jbuilder