Updates for week of March 4

[duglin]

• "latest" on a request that would result in "no latest version" is an error
• clarify that attributes with default values don't require their owning Objects to be present
• be consistent about case after dashes (e.g. -word vs - Word)
• treat hasDocument resources like Groups. Use of ?meta is meaningless, every MUST always be in the HTTP body. No xRegistry HTTP headers
• DELETE will NOT return the deleted resources, use "204"
• "contenttype" is ok to use with RESOURCEurl. No guarantee it matches the Content-Type of a the GET to RESOURCEurl though
• URI Template type : per RFC6570 section 3.2.1 (level 1)

[duglin]

Approved on the 3/7 call