Add simple partition support (get from partition view). Allow _delete…

[davidnixon]

…d for bulk_docs. Fix a flaw in get_uuids.

Just fixing up what I needed to try and use this for unit testing.

• really simple partition view support http://localhost:5984/mydatabase/_partition/mypartition/_design/myviews/_view/someview/
• added support for _deleted in the _bulk_docs POST
• Also include ok: true for each bulk doc added/deleted since that is what my real couch db does https://docs.couchdb.org/en/stable/api/database/bulk-api.html#db-bulk-docs
• Fix get_view that was crashing when trying to retrieve docs from a nonexistent view (now returns 404 - same error as real couch db)
• Fixed get_uuids to return multiple uuids when requested. It was looking for req.params.count but it should have been req.query.count https://docs.couchdb.org/en/stable/api/server/common.html#uuids
• Also get_uuids was returning duplicate uuids so I tweaked that as well.