(#558) - ensure that remove leaves only stub
(#682) - test putting unencoded attachment
(#682) - ensure unencoded attachment error report in idb
(#682) - ensure error report for unencoded attachments (websql)
(#682) - report error on unencoded attachment (leveldb)
(#682) - fix linting errors
(#687) - add simple getAttachment test
(#687) - add getAttachment to http adapter