Automatically log in after succesful account activation

[ingenieroariel]

When I create a new account and click the activation email, I get to a page telling me that my account is activated with a sign in link.

I think it would improve the experience if when I clicked the activation link, I would automatically be logged into my newly activated account. (Saves clicks and typing, could start uploading data etc. immediately)

[ingenieroariel]

In order to acomplish this, we need a django-registration version that sends an 'account activated signal', unfortunately, that is only available in the development version. The code required to make it work is in the following pull request:

http://github.com/GeoNode/geonode/pull/6

Marking this as 1.1 since it could complicate the build.

[ingenieroariel]

This landed after 1.1.1. We are using django-registration 0.8 now.