Change manifest Content-Type from rhizome-manifest/text to
rhizome/manifest; format="text+binarysig"
Add "Content-Transfer-Encoding" form-part headers to Java API
sent form parts, although not currently checked by Rhizome
RESTful interface
Add RHIZOME_BUNDLE_STATUS_READONLY enum value
Tighten up switch statements on bundle and payload status enums (no
default labels)
Rename some recently added enum entries
Return bundle status and payload status in HTTP responses
Add test for failing to decrypt a foreign encrypted bundle payload,
fix bug that caused an assertion failure
Add tests for fetching a non-existent manifest and fetching bundles
whose payload blob is not in the store
