Add the wisdom-filters project

Related to #367 - but right now just provide a transparent proxy.

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Small improvements in the wisdom test API

Extend FakeRequest and FakeContext to configure the uri and method
Add two utilities method in WisdomUnitTest to retrieve the content of a result as String

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>
Add wisdom filters to the module list

Signed-off-by: Clement Escoffier <clement.escoffier@gmail.com>