quotas: added app.

related to #37.
quotas: added test structure.

related to #37.
quotas: added view for info.

related to #37.
quota: getting data from tsuru.

related to #37.
quotas: added route for quotas.

related to #37.
using reverse for login required redirect.
quota: returning none on error.

related to #37.
quotas: added template for quotas.

closes #37.