Cfblog

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* support for django 1.9

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* added pre and post publish signals

* added can_publish permission

* added validation on out of date data stored in localstorage and restricted it from being published.

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* changed datetime.now to timezone.now in publish field

* fixed issue where editing page fails if cms_data contains script tag

* fixed issue where base and snippet templates load different csrf_token

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* Content instance is available inside the templates as `cms_content`. This is only available to those which are rendered using Content model.

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* `*` is added to fields that are markdown supported.

* lazy importing 'cms_page_index` inside middleware.

* major rework to the structure of cfblog

* removed html caching

* caching the validated templates using lru_cache

* split single render function to three functions

* added template context support for the templates being rendered by cfblog

* modified dum_request to be able to get passed to view

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* fixed issues 12, 13 and 14

* scripts and templates install in package folder.

* replaced `request.path` usage with `request.path_info`.

* added catchall url to fix the `csrf_token` being loaded as `NOTPROVIDED`.

* `process_response` now catches all the exceptions similar to flatpage middleware and return the original response.

* rewrote ContentManager to support chaining custom methods.

* added proper post notification on post failure.