GCompris activities for joyride

[Bruno Coudoin]

I just uploaded a new release of the GCompris activities. I followed
Bert's Etoy scripts to stay retro-compatible with previous startup
sequence.

Here is the changelog:

- New sugar compliant icon (but not very cute)
- Includes the Spanish translation (how are we supposed to manage
  localized bundle distributions?)
- Fixed broken activities like algebra_plus-activity that had missing
  resources.
- We no more write in the home directory

I did not made an extensive test, it's an automated build. Even major
bugs will remain unless I get informed.

Bruno.