salsa_rules 6.x-1.0

First release with the following actions:

1. Create a Supporter
2. Create an Event
3. Create a Group
4. Create a Petition
5. Add a Supporter to a Group (add Supporter_Group)
6. Add a Supporter to an Event (Supporter_Event)
7. Add a Supporter to a Petition (Supporter_Petition)
8. Remove Supporter
9. Remove Event
10. Remove Petition
11. Remove Supporter_Group
12. Remove Supporter_Event
13. Remove Supporter_Petition