Add support for Django 1.5
Update minimum django-preserialize version to 1.0.4

Fix and update changelog
Remove legacy static file
Update to restlib 0.3.4
Move docs to wiki
Collapse ContextViewBaseResource into BaseResource

The former only has two methods and do not conflict with
BaseResource methods.

In addition, the `get_request_view` and `get_context_context`
partial functions have been defined external to the methods
on the class. They each take a request and optionally an attrs
argument.
Resource overhaul, integrate preserialize posthook and restlib2 Parametizer

This significantly cleans up the code and makes it easier to extend in
the future. A few details:

- The classmethod decorator has been removed from prepare methods
- The `parametizer` attribute can be set to customize which Parametizer
class to use in `get_params`

The ConceptResource now, by default, does not embed related field within
the response. The `embed` GET param can be set to `1` to explicitly embed
the field data.

ConceptResource and FieldResource now support the `limit` and `brief`
parameters. The former limit the number of items returned and the latter
returns a lightweight response suitable for search-result based queries
that only need minimal descriptive data.
Remove explicit HttpResponse since restlib2 handles serialization

This was here due to a bug in before bruth/restlib2@afec7c64 but has
since been fixed