Battling

- singles works (teampreview , attackign and switching and mega evolving)
- doubles works but no targetting yet (TODO, not sure about team preview?)
- Fixed a problem in the request case when we switch

TODO :

- a better UI
- targetting system for doubles
- teampreview for doubles
- canceling support?


Wheredo you modify total active when it s double battle and u only have 1 pkm left?