Doc fix for error callback signature for Model#fetch and Collection#fetch
Merge branch 'master' of git://github.com/documentcloud/backbone into error-callback-doc-fix
Consolidating references to silenced changes.
Merge pull request #2399 from wyuenho/error-callback-doc-fix

Error callback doc fix
Merge pull request #2400 from tgriesser/removing-silent-docs

Consolidating references to silenced events
rewording events paragraph