devilry_detektor: Made a script for mass testing.

See #595.
devilry_detektor: Made it more or less infinitly scalable.

Only in the backend - to make it truly scalable, we will also need paging on the frontend.

See #595.
devilry_detektor: Group cache by language.

See #595.
devilry_detektor: Group by language.

See #595.