Fauxtin: Remove Todo, clean up readme

We haven't used todo.md in a long time. All the tickets are in JIRA.
I've just removed some old wording from the readme.md
Fauxton: add missing closing tags
Fauxton: Inject database into view

it's handled in the options and used, but was never passed
Fauxton: Implement bulk deletion for all-docs-listing

Introduce a collection which keeps track of documents that will
deleted using the CouchDB Bulk-update API.

The collection fires events, so the view is noticed.

Closes COUCHDB-2153