Fix the accept header.

A '/' is a separator and has to be in a quoted string.

Change-Id: If7a3a847f84f8f709074d05dc98b5b21e954030c
Cut v0.8.0.

Change-Id: Ie8d49793e78f10bdeb7ebe19cc2dc729ff7ef590
Merge branch 'master' into exp/storage-ng
Added a few missing implementations in index.go.

Also, added closing of persistence and mem storage.

Change-Id: Iacf0d22c3520dd2584d9546984c1f8a5ed6cd54e