Content Views: Working on the V2 API
Merge pull request #3638 from bbuckingham/cv-rework-filters

Content Views Rework: merging filters & filter rules, CRUD support
Merge pull request #3633 from daviddavis/temp/20140128110212

Content Views: Working on the V2 API
Content Views Rework: filter updates for api consistency and to support CLI

This commit has a few minor updates to ensure api consistency, support
CLI and improve behavior such as:
- routes: use content view resource on filter index/create
- routes: do not use content view resource on filter show/update/delete
- only update filter parameter created_at if the filter have changed
- updates to docs to  support apipie bindings for hammer-cli-katello support
- ...